[
  {
    "article_id": 352,
    "article_title": "Cervicitis",
    "sections": [
      {
        "title": "Bedside recognition and workup",
        "content": "Cervicitis is considered in any sexually active adolescent with purulent vaginal discharge, intermenstrual or postcoital bleeding, or dyspareunia — but cervicitis is frequently asymptomatic and can be found incidentally on exam. The two defining signs are sought: a purulent or mucopurulent endocervical exudate, and endocervical friability with sustained bleeding after gentle swab passage through the cervical os. In a younger adolescent, care is taken to distinguish these findings from normal cervical ectopy so inflammation is not overdiagnosed. The absence of fever or significant pain is typical of isolated cervicitis; if either is present, PID or HSV infection is evaluated for instead. Noninfectious causes are kept in mind too — a retained tampon, IUD, or irritation from contraceptive cream or douching can all produce a similar picture."
      },
      {
        "title": "Empiric treatment and counseling",
        "content": "In a sexually active patient with findings consistent with cervicitis, empiric treatment for [[185|gonorrhea]] and chlamydia is started while confirmatory testing is pending, since these are the most frequently identified pathogens. Screening for other sexually transmitted infections is done at the same visit, evaluation for [[106|pelvic inflammatory disease]] is undertaken if there is fever, significant pain, or other concerning features, and counseling on safe sexual practices is provided given the risks of ascending infection (PID, infertility, chronic pelvic pain, ectopic pregnancy), transmission to partners, and increased HIV acquisition risk with exposure. If a foreign body or irritant (tampon, IUD, contraceptive cream, douche) is identified as the likely cause, it is removed or discontinued as part of management."
      }
    ]
  },
  {
    "article_id": 353,
    "article_title": "Cellulitis",
    "sections": [
      {
        "title": "Evaluating a Child with Suspected Cellulitis",
        "content": "Exposure history that narrows the likely pathogen is assessed: recent animal bite (Pasteurella, Capnocytophaga), penetrating trauma (S. aureus), fresh or saltwater exposure (Aeromonas or Vibrio, respectively), fish/swine/poultry contact (Streptococcus iniae or Erysipelothrix), neutropenia (Pseudomonas and other gram-negatives are considered), or acute varicella (S. pyogenes superinfection). In an infant under 3 months with cellulitis, full evaluation for invasive infection - blood culture and, usually, lumbar puncture - is undertaken given the risk of group B streptococcal [[350|bacteremia]] and meningitis at this age. In toddlers with facial or buccal cellulitis, especially if unvaccinated, H. influenzae type b and S. pneumoniae are considered; a blue-red, dusky appearance to the skin is characteristic of H. influenzae buccal cellulitis. Fever is not expected to be present - only 10-20% of children with cellulitis are febrile - and blood cultures are usually unrevealing in a well-appearing, immunocompetent child. Bedside ultrasound is used when an abscess is suspected clinically, since distinguishing a drainable collection from simple cellulitis changes management."
      },
      {
        "title": "Choosing Outpatient versus Parenteral Therapy",
        "content": "For a child over 2 months with mild-to-moderate cellulitis and no fever, lymphadenopathy, or other constitutional signs, start oral therapy: dicloxacillin or cephalexin, switching to clindamycin if MRSA is a concern based on local prevalence or prior cultures; avoid relying on trimethoprim-sulfamethoxazole alone if S. pyogenes without abscess is a realistic possibility, since it does not reliably cover this organism. Escalate to initial parenteral treatment for an immunocompromised child, a toxic-appearing child, rapidly progressive lesions, facial or circumferential involvement, or crepitance/violaceous skin change - any of these should prompt admission-level management rather than outpatient oral therapy. For any pediatric patient with periorbital erythema, pain, and swelling with fever, examine carefully to exclude orbital cellulitis, and watch specifically for visual disturbance, altered mental status, or signs of sepsis that would indicate spread beyond the orbit."
      }
    ]
  },
  {
    "article_id": 354,
    "article_title": "Chronic Diarrhea",
    "sections": [
      {
        "title": "Initial bedside approach",
        "content": "The pattern is established first: loose or watery stools more than 3 times a day, lasting more than 2 weeks, deviating from the child's prior stool pattern. Whether this looks like small-bowel disease (large-volume stool, no blood/mucus) or large-bowel disease (small-volume stool with blood/mucus) is determined, and growth parameters are checked to see whether failure to thrive accompanies the diarrhea, since this substantially changes the differential. Specific questioning covers nighttime awakening to pass stool — a sign favoring an organic over a functional cause — and diet (excessive juice or carbohydrate intake, low fat intake), medication use (laxatives, antacids), and stressors, since these point toward the common, benign functional entities: toddler's diarrhea in a 6-month-to-5-year-old with normal growth, or [[374|irritable bowel syndrome]] in an older child or adolescent, especially a girl, with symptoms worse after eating or under stress. In a child under 3, systemic causes are not overlooked — a urinary tract infection is checked for first, since it is the most important systemic cause in this age group, along with [[310|nephrotic syndrome]], sepsis, or an inciting medication."
      },
      {
        "title": "When to escalate and how to treat",
        "content": "Escalate workup when [[246|growth failure]], nocturnal stooling, blood/mucus in stool, or a stool volume pattern concerning for a small-bowel process is present, since these argue against a purely functional cause and toward malabsorptive, inflammatory, or infectious disease requiring targeted testing (for example, celiac serologies, stool studies for Giardia or other pathogens, sweat chloride testing, or inflammatory markers depending on the clinical picture). Target treatment to the cause once identified — a gluten-free diet for celiac disease, anti-inflammatory/immunosuppressive therapy for [[254|inflammatory bowel disease]], pancreatic enzyme replacement for cystic fibrosis or other [[307|pancreatic insufficiency]], or surgery for Hirschsprung disease. If no cause is identified despite a thorough workup, prioritize nutrition support (enteral or parenteral as needed) to meet the child's needs while continuing evaluation. In an infant with unexplained, high-volume watery diarrhea (over roughly 30 mL/kg/day) who cannot maintain hydration orally, recognize this as a possible chronic idiopathic diarrhea of infancy and arrange IV fluid support promptly, given the otherwise high mortality risk without treatment."
      }
    ]
  },
  {
    "article_id": 355,
    "article_title": "Chorioamnionitis",
    "sections": [
      {
        "title": "Managing the Newborn Exposed to Chorioamnionitis",
        "content": "For a well-appearing infant of any gestational age born to a mother diagnosed with chorioamnionitis/Triple I, obtain at minimum a limited evaluation: blood culture at birth, plus a complete blood count with differential and platelets at birth and/or at 6-12 hours of life (some experts specifically favor the 6-12 hour timing to improve sensitivity). If the infant is 37 weeks or more gestation and remains well, home observation after 24 hours can be considered, but only if other discharge criteria are met, medical care is readily accessible, and a caregiver able to follow home observation instructions will be present; otherwise keep the infant in hospital for observation for at least 48 hours until discharge criteria are met. If signs of sepsis develop at any point - respiratory distress, temperature instability, poor perfusion, lethargy - proceed to a full diagnostic evaluation (including consideration of lumbar puncture) and start presumptive antibiotics rather than continuing observation alone. When a structured clinical-observation approach (rather than universal labs) is used at a given center, ensure serial, documented physical assessments occur with clear, predefined criteria for escalating to evaluation and treatment, and counsel families in advance that a later-developing illness in an initially well-appearing infant reflects the expected course of this monitoring strategy, not a care failure."
      },
      {
        "title": "Interpreting the Chorioamnionitis Diagnosis Itself",
        "content": "Recognize that \"chorioamnionitis\" is diagnosed clinically at the bedside (maternal fever plus fetal tachycardia, maternal leukocytosis over 15,000/uL, purulent cervical os discharge, or biochemical/microbiologic evidence of infection) but can only be truly confirmed by placental histology after delivery - so a clinical diagnosis, even without histologic confirmation, is sufficient to trigger neonatal evaluation as above. Remember that prolonged rupture of membranes (18 hours or more) is the classic antecedent but is not required, and that most infants exposed to chorioamnionitis will not develop sepsis, which should inform proportionate rather than reflexively aggressive management of the well-appearing exposed newborn."
      }
    ]
  },
  {
    "article_id": 356,
    "article_title": "Cryptorchidism",
    "sections": [
      {
        "title": "Newborn evaluation",
        "content": "On identifying an [[322|undescended testis]] in a newborn, whether it is unilateral or bilateral and whether the testis is palpable is determined first. Bilateral nonpalpable undescended testes in an apparently normal male newborn should never be assumed benign until the possibility of a fully virilized female with salt-losing [[136|congenital adrenal hyperplasia]] has been excluded, given the potentially fatal consequences of missing this diagnosis. Any cryptorchidism, unilateral or bilateral, occurring with hypospadias — especially severe hypospadias — should prompt evaluation for a disorder of sexual development, including karyotype. In infants aged 2-6 months, LH, FSH, inhibin B, and testosterone can help establish whether functional testicular tissue is present; beyond that age, an HCG stimulation test serves the same purpose. Imaging (ultrasound, CT, MRI) is reserved for localizing a testis suspected to be in the inguinal region — these modalities are unreliable for finding an intra-abdominal testis, and ultrasound has no role in simply searching for a nonpalpable testis. Renal ultrasound is ordered only if true congenital monorchism is suspected, since this specific entity (not cryptorchidism generally) is linked to ipsilateral renal agenesis."
      },
      {
        "title": "Timing referral and surgery",
        "content": "Because spontaneous descent is very unlikely beyond 6 months of corrected age (though about a third to half of cryptorchid testes will have descended spontaneously by around 3 months), referral to a surgical specialist is made if descent has not occurred by 6 months of corrected age. Orchiopexy between 6 and 18 months of age is the goal to best preserve fertility potential; if the child presents later, orchiopexy is still pursued before puberty, since this timing reduces the future risk of testicular malignancy even though it may not fully normalize fertility. An inguinal or scrotal approach is chosen for a palpable testis, and additional surgical evaluation is planned for a nonpalpable one. Hormonal therapy to induce descent is not offered, since it lacks proven long-term effectiveness. Families are counselled on the long-term stakes of delayed or missed treatment: roughly 33% reduced fertility with unilateral and 66% with bilateral disease, and a 5- to 10-fold increase in adult testicular cancer risk, with testicular histologic changes possible from as early as 6 months of age."
      }
    ]
  },
  {
    "article_id": 357,
    "article_title": "Chronic Sinusitis",
    "sections": [
      {
        "title": "Distinguishing Chronic Sinusitis from Recurrent Viral Illness",
        "content": "In a child with persistent cough (often worse lying supine) and rhinorrhea, whether symptoms have ever fully resolved within the typical 10-14 day course of a viral URI is determined first - if symptoms have persisted beyond 90 days (or 12 weeks) without a clear symptom-free interval, chronic sinusitis or chronic rhinosinusitis is favored over a string of separate viral illnesses. Chronic sinusitis is expected to look milder than acute bacterial sinusitis: fever is uncommon and the exam is often normal, so a lack of classic sinus tenderness or fever does not exclude the diagnosis. Predisposing conditions are screened for - cystic fibrosis (especially with nasal polyps), primary ciliary dyskinesia, immunoglobulin deficiency, [[98|allergic rhinitis]], and GERD - since these change management and prognosis. Sinus imaging (plain films or CT) is not relied upon to make the diagnosis in uncomplicated cases, since opacification, mucosal thickening, and air-fluid levels are also seen with the common cold."
      },
      {
        "title": "Treating Chronic or Recurrent Sinusitis",
        "content": "Supportive care is started - saline nasal irrigation, hydration, and acetaminophen or ibuprofen for discomfort - and over-the-counter cold medications or decongestants are avoided in children under 12. Because chronic sinusitis (especially lasting beyond a year) has a different microbiology than typical acute disease, including S. aureus and anaerobes alongside nontypeable H. influenzae and viridans streptococci, empiric antimicrobial therapy is initiated for recurrent acute or chronic sinusitis, with reassessment if there is no improvement. Referral to otolaryngology for endoscopic examination (with or without cultures) is made when a child fails to improve on empiric therapy; in most refractory cases, adenoidectomy is considered as a next step before CT scanning of the sinuses or sinus surgery are pursued. Any signs suggesting orbital or intracranial extension - periorbital swelling, visual change, severe headache, or altered mental status - are watched for and urgently evaluated, since sinusitis complications (orbital [[353|cellulitis]], brain abscess, epidural/subdural empyema, cavernous sinus thrombosis) occur more often in children than in adults and require prompt escalation of care."
      }
    ]
  },
  {
    "article_id": 358,
    "article_title": "Drug Overdose",
    "sections": [
      {
        "title": "Recognizing the toxidrome",
        "content": "When a child presents with an unclear overdose, use the toxidrome pattern to narrow the likely drug class: increased heart rate, blood pressure, and temperature with dilated pupils and reduced sweating suggests an anticholinergic agent (tricyclic antidepressants, antihistamines); reduced heart rate, respiratory rate, and temperature with constricted pupils and reduced sweating suggests an opioid; increased heart rate, blood pressure, respiratory rate, temperature, and sweating with dilated pupils suggests a sympathomimetic (cocaine, amphetamines); and reduced heart rate, respiratory rate, and temperature with no pupillary change suggests a sedative-hypnotic (anticonvulsants, benzodiazepines). For suspected opioid overdose specifically, look for stupor or coma, seizures, miosis (unless anoxia has supervened), respiratory depression, cyanosis, and pulmonary edema, and keep in mind that polydrug use often complicates the picture."
      },
      {
        "title": "Managing suspected opioid overdose and dosing safety",
        "content": "Intravenous naloxone 0.1 mg/kg (maximum 2 mg) is given for suspected opiate toxicity — pupillary dilation after administration supports the diagnosis, which can be confirmed with urine or serum testing for opiates. Any opioid-naive child who has ingested more than 5 mg of methadone, or any dose of an extended-release opioid, is treated with close observation, since methadone's long duration of action makes even small doses dangerous. When dosing any medication for a child, adult \"maximal safe dose\" references can overdose a smaller pediatric patient — age- or weight-based pediatric dosing (Young's, Fried's, or Clark's rule) is used rather than extrapolating adult doses directly, and liquid medication conversions from ingredient amount to volume are double-checked. If a child has been on round-the-clock opioid dosing for several days, the possibility of dependence and withdrawal on cessation is anticipated, even though specific pediatric withdrawal-management guidance is limited."
      }
    ]
  },
  {
    "article_id": 359,
    "article_title": "Facial Nerve Palsy",
    "sections": [
      {
        "title": "Examining the child with facial weakness",
        "content": "Establish first whether the weakness is central or peripheral, and whether it is congenital/neonatal or acquired. Peripheral disease is by far the more common pattern in children, especially when facial weakness is an isolated finding. In a neonate, look for facial asymmetry with crying, a drooping mouth corner, drooling on the affected side, an absent nasolabial fold, and incomplete eye closure — most such traumatic palsies resolve within the first week, though occasionally over months. In an older child with sudden-onset unilateral weakness involving the frontalis, orbicularis oculi, nasalis, and orbicularis oris, consider Bell palsy, especially if preceded by an [[274|upper respiratory infection]] and ear or periauricular pain; check for hyperacusis, impaired tearing, and taste on the anterior two-thirds of the tongue as supporting findings. Distinguish true palsy from Möbius syndrome (bilateral, with impaired eye abduction) and from congenital absence of the depressor anguli oris (spares forehead, eyelid, and nasolabial fold, and can accompany cardiac anomalies)."
      },
      {
        "title": "When to test for Lyme and how to manage",
        "content": "In a Lyme-endemic area, Lyme serology is obtained for any child with isolated facial nerve palsy, even without other systemic symptoms, since facial palsy can be the only presenting sign; bilateral facial weakness favors Lyme over Bell palsy, and fever, malaise, headache, myalgia, or arthralgia preceding the palsy also favor Lyme. If serology is initially negative but suspicion is high, titers are repeated later, since sensitivity increases with time from infection. Lumbar puncture is reserved for evidence of meningoencephalitis (severe headache, nuchal rigidity) — its routine use for isolated facial palsy with Lyme risk alone is controversial. Confirmed Lyme-associated facial palsy is treated with oral antibiotics for 14-21 days. For Bell palsy without an identified cause, symptomatic care and corneal protection (lubricating drops, eye patch) are provided rather than steroids or acyclovir, which have not been shown to improve pediatric outcomes; families are counselled that up to 90% of children recover fully, but referral for further workup is made if recurrence occurs or if there is no improvement after 2-3 months."
      }
    ]
  },
  {
    "article_id": 360,
    "article_title": "Dilated Cardiomyopathy",
    "sections": [
      {
        "title": "Recognizing Pediatric DCM Across Age Groups",
        "content": "In an infant or toddler with tachypnea, tachycardia, weak peripheral pulses, low blood pressure, and hepatomegaly - or in extreme cases frank shock - consider dilated cardiomyopathy and obtain an echocardiogram; do not expect the classic adult picture of edema and rales at this age, since gastrointestinal symptoms (abdominal pain, vomiting) and failure to thrive can be the dominant presenting features in young children with heart failure. In an adolescent presenting more like an adult - exertional dyspnea, orthopnea, fatigue, dependent edema, rales, elevated JVP - listen specifically for a gallop rhythm (usually S3) and murmurs of mitral or tricuspid regurgitation from ventricular dilation. On echocardiography, especially in a younger child being worked up for possible [[100|myocarditis]], confirm normal coronary artery origins to rule out an anomalous left coronary artery from the pulmonary artery, which can present similarly to DCM but requires a completely different (surgical) approach."
      },
      {
        "title": "Managing Heart Failure in DCM",
        "content": "For acute decompensated heart failure, diuretics, inotropic support (milrinone, or dopamine/dobutamine per center practice), and afterload reduction/vasodilators are used, and [[121|pediatric cardiology]] is involved early given the potential need for mechanical circulatory support. Once a child is stabilized into compensated heart failure, transition is made to an ACE inhibitor (or ARB) and a beta-blocker such as carvedilol, with diuretics as needed. Endomyocardial biopsy is reserved for cases where a specific infectious or inflammatory cause needs confirmation, since it is rarely required and most commonly shows nonspecific mononuclear infiltrates when performed. Families are counselled that myocarditis-associated presentations often improve spontaneously and that over a third of children show significant improvement in cardiac function over time, while also being prepared for the possibility that transplantation, with or without a bridging mechanical circulatory support device, remains a possible outcome for children who do not recover adequate function."
      }
    ]
  },
  {
    "article_id": 361,
    "article_title": "Foreign Body Ingestion",
    "sections": [
      {
        "title": "Bedside assessment of a suspected ingestion",
        "content": "In any child with a suspected or witnessed foreign body ingestion, a thorough history is taken and a careful examination performed, evaluating for respiratory distress, oropharyngeal injury, and signs of perforation such as subcutaneous emphysema or peritoneal signs — noting that up to 50% of children are asymptomatic despite true ingestion. Specific questioning covers dysphagia, refusal to eat, drooling, gagging, vomiting, or a foreign-body sensation, which suggest esophageal impaction; the mouth, oropharynx, neck, chest, and abdomen are examined in any child with swallowing difficulty. The urgency and approach to removal are based on the object's nature, location, and size, the timing of ingestion, presence of symptoms, and NPO status — coins and most small objects can often be observed for spontaneous passage, but batteries and multiple magnets require urgent attention given their higher risk of serious complications even though they are ingested less often than coins. A foreign body lodged in the esophagus is treated as an emergency because of perforation and sepsis risk."
      },
      {
        "title": "Distinguishing ingestion from aspiration, and managing each",
        "content": "If a child presents with sudden-onset choking, stridor, or wheezing, foreign body aspiration is presumed until proven otherwise, even though the classic witnessed-choking history is not always present — an unwitnessed aspiration can mimic croup, [[3|bronchiolitis]], or asthma with nonspecific cough, stridor, or wheezing, so suspicion for airway foreign body is maintained with any sudden-onset respiratory symptom. In infants, liquids are the most common cause of choking; in toddlers and older children, small objects and foods such as grapes, nuts, hot dogs, and candy are typical. For acute, severe airway obstruction in a conscious child, abdominal thrusts are used. For a suspected esophageal foreign body, prompt evaluation and, if needed, endoscopic removal (about 10-20% of cases) are arranged — surgery is rarely needed (under 1%). A nasal foreign body is considered in any child with persistent unilateral, foul-smelling rhinorrhea, and is removed in the office with appropriate equipment when feasible, with general anesthesia reserved for difficult cases. In a child with recurrent food impaction and dysphagia, eosinophilic esophagitis is evaluated for, which is found in the large majority of such presentations."
      }
    ]
  },
  {
    "article_id": 362,
    "article_title": "Exercise-Induced Asthma",
    "sections": [
      {
        "title": "Evaluating Exercise-Induced Symptoms",
        "content": "When a child reports cough, wheeze, or chest tightness with exercise, first determine whether beta-agonist pretreatment controls the symptoms and whether other asthma features are present; if so, EIB is likely and formal exercise challenge testing is not always necessary. If symptoms are severe, occur with only minimal exertion, or persist despite beta-agonist pretreatment, pursue further evaluation rather than assuming asthma - consider vocal cord dysfunction, exercise-induced [[385|laryngomalacia]], exercise-induced hyperventilation, restrictive chest wall disease, exercise-induced arrhythmia, exercise-induced [[143|anaphylaxis]] or reflux, and cardiac shunt lesions. When objective confirmation is needed, arrange a standardized exercise challenge (treadmill or cycle ergometer) rather than a methacholine challenge, since MCT cannot diagnose or exclude EIB; instruct the child to avoid vigorous exercise for at least 4 hours beforehand to avoid a falsely negative result from the exercise refractory period. A drop in FEV1 of 15% or more from pre-exercise baseline at a postexercise interval confirms the diagnosis."
      },
      {
        "title": "Managing EIB and Encouraging Activity",
        "content": "Physical activity is not restricted in children with asthma - participation is encouraged, and instead the specific activity or environment (for example, avoiding very cold, dry air) is adjusted as needed based on asthma severity. Two clinical patterns are distinguished: bronchospasm or poor endurance appearing during ordinary play, which signals poorly controlled persistent asthma and calls for starting or stepping up daily controller therapy; versus exercise-induced bronchospasm as the sole manifestation in an otherwise well-controlled child, for which pre-exercise treatment with a SABA or a leukotriene modifier taken shortly before vigorous activity is usually sufficient. Symptoms typically peak 5-10 minutes after stopping exercise and resolve over the next 20-30 minutes, which is useful for setting expectations with families and coaches about timing around practices and competitions."
      }
    ]
  },
  {
    "article_id": 363,
    "article_title": "Gastroesophageal Reflux Disease",
    "sections": [
      {
        "title": "Distinguishing physiologic reflux from disease",
        "content": "In an infant with frequent, effortless regurgitation who is otherwise well and gaining weight normally, the family is reassured that this is physiologic GER, typically peaking around 3-4 months and resolving by 12-18 months in the great majority of cases as the lower esophageal sphincter matures and the diet shifts to solids. The label GERD, and further workup, is reserved for infants or children with troublesome symptoms or complications: esophagitis-type symptoms (heartburn, regurgitation with discomfort), poor weight gain or [[246|growth failure]], or extraesophageal features such as [[199|chronic cough]], hoarseness, wheezing, or recurrent/chronic rhinosinusitis, especially in a child with a history of reflux as an infant. In an older child, specific questions are asked about regurgitation into the mouth, heartburn, and dysphagia, which are the adult-type symptoms typical at this age."
      },
      {
        "title": "Stepwise management",
        "content": "Treatment starts with nonpharmacologic measures in infants: feed volumes are reduced, feeds are thickened, and the infant is positioned upright after feeding. In older children, avoidance of foods that trigger symptoms and small, frequent meals are recommended. If symptoms persist or complications (esophagitis) are suspected, acid suppression (e.g., a proton pump inhibitor) is added and a prokinetic is considered if gastroparesis is present; esophagitis is confirmed with endoscopy and biopsy rather than treated empirically indefinitely. Fundoplication is reserved for medically refractory GERD, and alternative causes of recurrent vomiting (by age: gastroenteritis, intussusception, increased intracranial pressure, cyclic vomiting, eosinophilic esophagitis in younger children; functional dyspepsia, appendicitis, IBD, pregnancy, or disordered eating in adolescents) are ruled out before surgery is considered. Targeted testing (24-hour pH/impedance study, endoscopy, sweat chloride, bronchoscopy, or chest imaging) is pursued when the presentation is atypical, symptoms are severe, or the child is under 6 months with unexplained wheezing, rather than assuming reflux is the cause without evidence."
      }
    ]
  },
  {
    "article_id": 364,
    "article_title": "Fetal Alcohol Syndrome",
    "sections": [
      {
        "title": "Recognizing and Diagnosing FAS",
        "content": "FAS is suspected in a small-for-gestational-age newborn with poor catch-up growth, abnormal tone (increased or decreased), irritability, or tremulousness, and is confirmed using the full 4-part diagnostic framework rather than facial gestalt alone: at least 2 of 3 facial anomalies (short palpebral fissures at or below the 10th percentile, thin upper lip, smooth philtrum), growth at or below the 10th percentile (prenatal or postnatal), at least 1 structural or functional brain abnormality (small head circumference, or unexplained recurrent nonfebrile seizures), and neurobehavioral impairment. The diagnosis can be made with or without confirmed maternal alcohol use, but it is reserved for infants with a genuine history of substantial in-utero alcohol exposure plus the characteristic features - \"fetal alcohol effects\" is not applied loosely to children with developmental disorders who lack the clinical stigmata. Screening is directed specifically at associated structural anomalies (present in about half of affected children), particularly cardiac, neural tube, and genitourinary defects. Because diagnosis is often missed until school age, suspicion is maintained in an older child who is thin, hyperactive, and shows fine-motor delay, especially with a history suggesting prenatal alcohol exposure."
      },
      {
        "title": "Counseling and Long-Term Management",
        "content": "Every pregnant patient is counselled that no amount of alcohol during pregnancy is considered safe, and that FAS/FASD is entirely preventable through abstinence - this is the single most impactful prevention message available. For a child already diagnosed anywhere on the FASD spectrum, expectations are set that neurocognitive and behavioral problems are lifelong, but that early recognition and therapy can meaningfully improve outcomes. Co-occurring environmental adversity is addressed actively, since behavioral problems in children with FASD are often worsened by the same factors that may have contributed to the mother's alcohol use - toxic stress, neglect or abuse, domestic violence, homelessness, and family discord - so families are connected with appropriate psychosocial support alongside developmental and educational services."
      }
    ]
  },
  {
    "article_id": 365,
    "article_title": "Group B Streptococcal Infection",
    "sections": [
      {
        "title": "Recognizing early- versus late-onset disease",
        "content": "In a neonate presenting within the first week of life, especially within hours of delivery, with respiratory distress, apnea, or shock, early-onset GBS disease is considered — pneumonia with respiratory failure is common and can look like hyaline membrane disease on chest x-ray, and meningitis, while less common in this presentation (5-10% of cases), should still be considered. In an infant presenting between about 1 week and 3 months of age (typically 3-4 weeks) with fever, [[350|bacteremia]], or signs of meningitis, late-onset GBS disease is considered, which accounts for meningitis or occult bacteremia in about 30% of cases; focal infection (bone/joint swelling or pain, skin/soft tissue findings, respiratory symptoms) is also examined for, since [[175|osteomyelitis]], [[227|septic arthritis]], necrotizing fasciitis, pneumonia, adenitis, and [[353|cellulitis]] can all occur, albeit less commonly than bacteremia or meningitis. The diagnosis is confirmed by culturing blood, CSF, or a focal infection site, and white cell abnormalities like neutropenia support but do not confirm the diagnosis."
      },
      {
        "title": "Empiric treatment and counseling on prognosis",
        "content": "Include ampicillin in empiric therapy for suspected neonatal meningitis or sepsis in this age group, since it covers GBS along with Listeria and enterococci, the other major pathogens of concern at this age. When counseling families after a diagnosis of invasive GBS disease, be direct about the risk of long-term impact: nearly half of early-onset disease survivors, and about 1 in 5 survivors of GBS meningitis specifically, have moderate to severe neurodevelopmental impairment, so early recognition and treatment matter, and close developmental follow-up is warranted after recovery. When evaluating a pregnant patient's obstetric history, remember that maternal GBS colonization (present in 15-35% of pregnant women) combined with intrapartum antibiotic prophylaxis is the basis for the 85% reduction achieved in early-onset disease — a history of untested or unscreened maternal GBS status in labor should raise the index of suspicion for early-onset disease in a symptomatic newborn."
      }
    ]
  },
  {
    "article_id": 366,
    "article_title": "Fragile X Syndrome",
    "sections": [
      {
        "title": "When to Test for Fragile X Syndrome",
        "content": "Physical examination alone is not relied upon to screen for fragile X syndrome in a young child, since the characteristic craniofacial features (long face, prominent forehead, prognathism, large ears) and macro-orchidism typically do not become apparent until the second decade of life, and macro-orchidism is rare before age 6. Instead, a low threshold is kept for ordering fragile X DNA (CGG-repeat) analysis in any boy presenting with unexplained developmental delay, especially when accompanied by social anxiety, hyperactivity, gaze aversion, perseverative language, hand biting, or marked sensory hypersensitivity. Testing is also considered in girls with unexplained developmental delay or autism-spectrum features, since about 30% of girls with the full mutation show cognitive effects, generally milder than in boys. A thorough family history is taken, specifically asking about intellectual disability, premature ovarian failure, and adult-onset tremor/ataxia in relatives, since these can reflect premutation carriage elsewhere in the family and should prompt cascade genetic counseling."
      },
      {
        "title": "Managing a Child with Confirmed Fragile X Syndrome",
        "content": "Arrange a multidisciplinary approach centered on developmental and behavioral monitoring: routine primary care health supervision, ongoing input from a clinician experienced with fragile X syndrome, and connection to educational and behavioral health resources in the community. Anticipate and screen for associated findings - hyperextensible joints, mitral valve prolapse, and macro-orchidism developing around puberty - as part of routine follow-up rather than waiting for symptoms to prompt evaluation. Extend genetic counseling to the family once a diagnosis is confirmed, since the finding has implications for other relatives who may carry a premutation and be at risk for premature ovarian failure or fragile X-associated tremor/ataxia syndrome, and since future pregnancies in the family carry recurrence risk shaped by the anticipation phenomenon (repeat expansion through maternal transmission)."
      }
    ]
  },
  {
    "article_id": 367,
    "article_title": "Heat Exhaustion",
    "sections": [
      {
        "title": "Recognizing heat exhaustion and separating it from heat stroke",
        "content": "In a child with weakness, fatigue, headache, nausea, vomiting, dizziness, orthostasis, or [[334|syncope]] after heat exposure or exertion, with a core temperature roughly 37.7-40°C (100-104°F) and only mild or absent CNS dysfunction, diagnose heat exhaustion. Distinguish the water-depletion pattern (fever, intense thirst, hyperventilation, paresthesias) from the salt-depletion pattern (severe muscle cramps, anorexia, diarrhea, orthostatic hypotension, [[170|hyponatremia]], hemoconcentration, low urine sodium) — the latter especially in a child with cystic fibrosis, whose sweat sodium losses do not normalize with acclimatization. Critically, differentiate from [[295|heat stroke]]: a core temperature above 104-105°F with stupor, coma, seizure, or other significant CNS dysfunction, hot/possibly dry skin, and hemodynamic instability signals heat stroke, a life-threatening emergency requiring immediate aggressive cooling and ICU-level care rather than the measures used for heat exhaustion."
      },
      {
        "title": "Cooling and rehydration",
        "content": "The child is moved to a cool environment, excess clothing is removed, and active cooling is applied with fans and ice packs or ice water over the groin and axillae. Oral rehydration with electrolyte-containing fluids is given if tolerated; IV fluids are used if oral intake is not possible. Rectal temperature is monitored continuously during cooling, with active cooling stopped once the temperature falls below about 38.9°C (102°F) or the child begins shivering, to avoid overcooling. Close attention is paid to any sign of CNS dysfunction or hemodynamic instability during treatment, since this would indicate progression to heat stroke and the need for emergency transport and intensive care; families are reassured that full recovery is expected for heat exhaustion once appropriately treated. For prevention in returning athletes, the modifiable risk factors are addressed directly: acclimatization time is built in, adequate hydration and salt replacement are ensured, adequate recovery is scheduled between exercise bouts, and clothing/equipment that allows heat dissipation is chosen."
      }
    ]
  },
  {
    "article_id": 368,
    "article_title": "Hypocalcemia",
    "sections": [
      {
        "title": "Bedside recognition and initial workup",
        "content": "In a neonate with hypotonia, jitteriness, tetany, clonus, seizures, respiratory distress, or [[138|feeding difficulty]], ionized calcium is checked (preferred over total calcium alone) and the timing of onset is noted: before 72 hours favors a transient, birth/pregnancy-related cause (prematurity, maternal diabetes, asphyxia, hypomagnesemia), while onset after the first week favors a more lasting pathology (hypoparathyroidism/DiGeorge, high-phosphate formula or cow's milk intake, severe maternal [[326|vitamin D deficiency]]). Dysmorphic features or congenital heart disease are looked for as clues to DiGeorge syndrome, and an ECG is obtained to check for QT prolongation. In an older child with irritability, lethargy, muscular twitching, tremulousness, or seizures, similar screening is performed, and phosphate, PTH, 25(OH)-D, and 1,25(OH)2-D are checked to localize the cause — and magnesium is always checked, since coexisting hypomagnesemia can make hypocalcemia refractory to treatment until corrected."
      },
      {
        "title": "Treatment approach",
        "content": "Most infants are managed conservatively with early nutrition and close monitoring, since the majority remain asymptomatic. Intravenous or oral calcium replacement is given for symptomatic neonates. For chronic hypocalcemia due to hypoparathyroidism, oral calcium salts, generally combined with vitamin D, are used as the preferred long-term approach. If hypocalcemia proves resistant to standard calcium/vitamin D replacement, magnesium status is checked and corrected before calcium therapy is escalated further. Breastfeeding is favored over formula where relevant, since formula feeding is associated with a higher rate of hypocalcemia in term infants, and high-phosphate cow's milk or formula is avoided in infants at risk for late-onset hypocalcemia."
      }
    ]
  },
  {
    "article_id": 369,
    "article_title": "Glomerulonephritis",
    "sections": [
      {
        "title": "Evaluating a Child with Suspected Glomerulonephritis",
        "content": "In a child with dark (cola- or tea-colored) urine, urinalysis and exam are checked for the full nephritic picture - [[187|hematuria]] with red blood cell casts, proteinuria, hypertension, and edema; RBC casts essentially confirm a glomerular/vasculitic source and exclude extrarenal bleeding. Serum C3 is checked as an early branch point: low C3 with elevated ASO/streptozyme supports APSGN (the most likely diagnosis in a 4-12-year-old with a preceding pharyngitis, otitis media, or skin infection 1-6 weeks earlier), while a normal C3 shifts the differential toward IgA nephropathy, ANCA vasculitis, or anti-GBM disease. Specific questions are asked about recurrent painless macroscopic hematuria, which points to IgA nephropathy but can also be an early presentation of Alport syndrome in the first decade of life. Admission is arranged for renal insufficiency, oliguria, or acute hypertension, with the latter managed aggressively with fluid/salt restriction and antihypertensive therapy; families are reassured that typical APSGN has an excellent prognosis, with most children recovering fully even though microscopic hematuria can linger for up to a year."
      },
      {
        "title": "Recognizing Rapidly Progressive Disease",
        "content": "Urgent escalation is warranted when a child with GN shows a rapidly progressive course - worsening renal function, especially with anemia, marked hypertension, and edema out of proportion to a typical self-limited postinfectious picture - since this raises concern for RPGN or a crescentic process requiring biopsy and consideration of immunosuppression. Pulmonary hemorrhage in a child with glomerulonephritis is treated as a medical emergency suggesting anti-GBM disease (Goodpasture syndrome) or ANCA vasculitis, since delayed treatment can be fatal. For a child with biopsy-proven MPGN/C3 glomerulopathy or another chronic GN, care is coordinated with pediatric nephrology for immunosuppressive treatment, and families are counselled that response varies by the specific underlying mechanism rather than following one predictable course."
      }
    ]
  },
  {
    "article_id": 370,
    "article_title": "Hair Loss",
    "sections": [
      {
        "title": "Working Up a Child with Hair Loss",
        "content": "Evaluation starts by classifying the pattern: diffuse versus circumscribed, and congenital versus acquired, since this framework (congenital diffuse, congenital localized, acquired diffuse, acquired localized) narrows the differential substantially. For circumscribed acquired hair loss, close examination looks for the three leading causes: a smooth, well-demarcated bald patch suggests [[346|alopecia areata]]; scaling with broken hairs (sometimes black dots) suggests [[339|tinea capitis]]; and hairs of variable, uneven length with an irregular pattern (crown, occipital, parietal areas), sometimes with scalp crusting, suggests trichotillomania. A Wood lamp exam is performed if tinea capitis is suspected, but a negative result does not exclude the diagnosis, since T. tonsurans - the dominant US cause - does not fluoresce; fungal culture/microscopy follows if suspicion remains. For diffuse hair loss, specific questions are asked about events 2-4 months prior (illness, surgery, childbirth, high fever, new medication, crash dieting, or major stress), since this history points to telogen effluvium, and reassurance is given that regrowth is expected over 6-12 months. Anagen effluvium is considered in any child on chemotherapy or radiation who develops hair loss."
      },
      {
        "title": "Treating Common Pediatric Alopecias",
        "content": "For alopecia areata, offer topical or intradermal triamcinolone and counsel that about half of children regrow hair fully within a year, though relapse can occur - also screen for associated autoimmune conditions (thyroid disease, vitiligo) and check for nail pitting on exam. For telogen effluvium, reassurance alone is usually sufficient once the inciting stressor is identified and addressed. For tinea capitis, start systemic antifungal therapy rather than topical treatment, since topical agents cannot penetrate the hair shaft; treat kerion-type presentations the same way, since most respond well without incision. For trichotillomania, build a strong therapeutic alliance with the child and family, initiate cognitive behavioral therapy, and consider adjunct medication (clomipramine or N-acetylcysteine) for refractory cases, recognizing the OCD-spectrum nature of the behavior."
      }
    ]
  },
  {
    "article_id": 371,
    "article_title": "Influenza A",
    "sections": [
      {
        "title": "Recognizing the age-dependent presentation",
        "content": "In an older child or adolescent, expect the classic syndrome — sudden high fever, severe myalgia, headache, and chills that overshadow coryza, pharyngitis, and cough — with a typically unremarkable chest exam and absence of rash, marked conjunctivitis, adenopathy, exudative pharyngitis, or dehydrating enteritis (features that would suggest a different diagnosis). In infants and young children, expect a less distinct picture: fever, diarrhea, vomiting, and abdominal pain are common, and the child may look highly febrile and toxic or present with a sepsis-like illness with apnea, prompting a full sepsis evaluation. In children under 5, and especially under 2, obtain laboratory confirmation (rapid antigen test or PCR) given their higher complication risk, rather than relying on clinical diagnosis alone."
      },
      {
        "title": "Treatment decisions and safety",
        "content": "Antiviral treatment is started for any child hospitalized with presumed [[298|influenza]], any child with confirmed or suspected influenza and severe/complicated/progressive illness, any child at high risk for complications regardless of vaccination status, and any otherwise healthy child for whom the provider feels shortened symptom duration is clinically warranted. Acetaminophen or another nonsalicylate antipyretic is used for fever control — never aspirin or salicylate-containing products, given the risk of Reye syndrome. Patients are watched for, and counselled on, the range of possible complications: secondary bacterial infection (particularly pneumonia), sinusitis, otitis media, encephalitis, [[100|myocarditis]], myositis, and croup (which can be especially severe with influenza A) — and expectations are set that while the febrile illness usually resolves in 2-4 days and overall illness in 3-7 days, cough and subtle airway dysfunction can linger for weeks."
      }
    ]
  },
  {
    "article_id": 372,
    "article_title": "Hiv Infection",
    "sections": [
      {
        "title": "Recognizing Pediatric HIV and Early Complications",
        "content": "Maintain suspicion for HIV infection in any infant with unexplained, persistent fevers, generalized lymphadenopathy, hepatosplenomegaly, failure to thrive, persistent/recurrent oral or diaper candidiasis, recurrent diarrhea, or chronic parotid swelling - especially when findings persist beyond what is typical for isolated common illnesses. Remember that up to 20% of untreated infected infants present in the first 3-6 months of life with an AIDS-defining illness such as PJP, and that CD4 count can be misleadingly normal even during PJP in an infant, so a normal CD4 does not exclude serious opportunistic infection in this age group. In a known HIV-infected child presenting acutely, room the child quickly to reduce nosocomial infection risk, check pulse oximetry at triage (indolent hypoxemia can be an early PJP sign), and maintain a lower threshold for serious bacterial or viral sepsis given the underlying immunosuppression."
      },
      {
        "title": "Managing the Child with Confirmed HIV",
        "content": "Long-term adherence to combination antiretroviral therapy is ensured, since consistent ART use is what has transformed pediatric HIV from a near-uniformly fatal diagnosis into a condition compatible with essentially normal childhood and survival into adulthood. Pneumocystis jirovecii pneumonia prophylaxis is added as indicated. Clinical stage and CD4+ T-lymphocyte count/percentage are tracked over time as the primary immunologic and prognostic markers in children under 13. Screening for hepatitis C coinfection is performed when relevant perinatal risk factors are present, using molecular (PCR) testing rather than relying on antibody testing alone, since some coinfected children do not seroconvert. The psychosocial dimension is addressed proactively - families are guided on disclosure timing and content for the child and siblings, confidentiality is safeguarded, and structured adherence support is provided, since these factors are as important to long-term outcomes as the antiretroviral regimen itself."
      }
    ]
  },
  {
    "article_id": 373,
    "article_title": "Insulin Resistance",
    "sections": [
      {
        "title": "Recognizing insulin resistance in clinic",
        "content": "Examine any obese child for acanthosis nigricans (velvety hyperpigmentation, classically axillary), present in over 60% of children with BMI above the 98th percentile, as a marker prompting evaluation for insulin resistance and associated [[333|metabolic syndrome]] features (hypertension, HDL under 40 mg/dL, triglycerides over 150 mg/dL). If acanthosis nigricans or other insulin-resistance features are present without obesity, or with signs of androgen excess (hirsutism, irregular periods, polycystic ovaries), consider a genetic insulin receptor defect (type A insulin resistance in adolescence) or an underlying endocrinopathy (Cushing syndrome, PCOS, thyroid disease, acromegaly) or medication effect rather than assuming simple obesity-related insulin resistance. In an infant with intrauterine growth restriction plus fluctuating hypoglycemia and hyperglycemia and profound insulin resistance, consider Donohue or Rabson-Mendenhall syndrome and pursue genetic testing of the insulin receptor gene promptly given the poor prognosis of Donohue syndrome."
      },
      {
        "title": "Management approach",
        "content": "A 6-month trial of lifestyle modification — dietary changes and increased physical activity — is used as first-line treatment for obesity-associated insulin resistance and any associated dyslipidemia; metformin is not started for insulin resistance alone, and a child with insulin resistance but normal glucose concentrations is never treated with metformin, since it is not currently recommended for this indication despite some short-trial benefit signals. Any child with prediabetes or type 2 diabetes found on screening is referred to a pediatric endocrinologist, and comorbidities that share the insulin-resistance pathway, particularly PCOS and [[311|obstructive sleep apnea]], are proactively screened for and managed. For MODY, subtypes are distinguished: MODY 1 and 3 usually respond to sulfonylureas as first-line therapy, while MODY 2 needs no pharmacologic treatment given its benign course. In a child with CKD, insulin resistance and hyperlipidemia are monitored for even at early disease stages, since more than half develop hyperlipidemia by the time they reach ESRD."
      }
    ]
  },
  {
    "article_id": 374,
    "article_title": "Irritable Bowel Syndrome",
    "sections": [
      {
        "title": "Distinguishing IBS from organic disease at the bedside",
        "content": "In a child with recurrent, crampy abdominal pain and altered bowel habits, the Rome IV framework is applied: abdominal pain at least 4 days per month for 2 months, tied to defecation or a change in stool frequency/form, in a child who otherwise looks well. The reassuring pattern is confirmed: no nighttime diarrhea, good appetite, normal growth, and no weight loss, fever, rectal bleeding, or anemia. Any of these alarm features — or nighttime symptoms — should prompt evaluation for [[254|inflammatory bowel disease]] or celiac disease rather than a presumptive IBS diagnosis. Late-onset [[255|lactose intolerance]] and excess fructose/sorbitol intake, common IBS mimics, are also ruled out with a careful dietary history, and celiac serologies are checked as part of the workup. If constipation and pain coexist, the constipation is treated first before ongoing symptoms are attributed to the IBS-constipation-predominant subtype."
      },
      {
        "title": "Stepwise supportive management",
        "content": "Management starts with dietary measures: a high-residue/high-fiber diet for diarrhea-predominant symptoms, and any specific dietary triggers identified (excess fructose, sorbitol, or lactose) are addressed. Anticholinergic medication is added for pain, and a tricyclic antidepressant is considered for diarrhea-predominant IBS specifically, under experienced supervision given the need for careful monitoring in children. Probiotics or peppermint oil are offered as adjuncts, recognizing variable response, and referral for behavioral treatment or psychotherapy is made, since these are among the more effective interventions and address the stress/anxiety component of the gut-brain interaction underlying IBS. Expectations are set with families that IBS is a benign, functional condition without long-term structural damage, but that management is often a process of trial and adjustment rather than a single definitive fix."
      }
    ]
  },
  {
    "article_id": 375,
    "article_title": "Idiopathic Intracranial Hypertension",
    "sections": [
      {
        "title": "Evaluating Suspected IIH",
        "content": "In a child or adolescent with chronic or progressive headache, particularly with visual symptoms (obscurations, photopsia, diplopia), tinnitus, or a cranial nerve VI palsy, examine for papilledema and obtain MRI/MRV of the head before proceeding to lumbar puncture, since IIH is a diagnosis of exclusion requiring normal neuroimaging. Actively rule out structural causes - mass lesion, hydrocephalus, optic glioma, craniopharyngioma, or venous sinus thrombosis (especially with a history of clotting risk, or complicated otitis media/mastoiditis) - since papilledema and raised pressure from these causes can be mistaken for IIH, and false-positive IIH diagnosis is common when this step is skipped. Once neuroimaging is normal, confirm with an elevated opening pressure on lumbar puncture performed in the lateral decubitus position. Take a directed medication and exposure history: recent high-dose vitamin A/retinoid use, tetracycline or doxycycline (common in adolescents being treated for acne), growth hormone therapy, oral contraceptive use, or recent steroid withdrawal are all recognized associations. Remember that prepubertal children with IIH do not show the same female-and-obesity risk pattern seen in adolescents and adults, so do not use the absence of obesity to lower suspicion in a younger child."
      },
      {
        "title": "Managing and Following IIH",
        "content": "Initial treatment is directed at both symptomatic pain relief and, more importantly, prevention of visual loss, since reversible visual deficits can become permanent without timely intervention - prompt ophthalmologic assessment of papilledema and visual fields is arranged. Most children can be managed as outpatients; admission is reserved for those needing continued parenteral therapy to control symptoms. Referral to neurology is made for any child with chronic or recurrent symptoms requiring prophylactic treatment, and close follow-up of visual function is arranged given the reversible-but-time-sensitive nature of IIH-associated visual loss."
      }
    ]
  },
  {
    "article_id": 376,
    "article_title": "Juvenile Polyp",
    "sections": [
      {
        "title": "Evaluating painless rectal bleeding",
        "content": "In a child aged 2-10 (especially 3-4 years) with intermittent, painless blood on a formed stool, a juvenile polyp is considered the most likely cause, particularly if the child is otherwise well. A gentle digital rectal exam is performed, since solitary rectal polyps are often palpable — but this proceeds carefully, as a torn polyp stalk can bleed briskly. Colonoscopy is pursued rather than relying on rectal exam alone, since it is both diagnostic and therapeutic (biopsy, snare polypectomy) and detects the synchronous polyps present in up to half of affected children. Occult blood loss and anemia are considered an alternative presentation in 20-25% of cases, even without visible bleeding, and large-polyp symptoms (diarrhea, tenesmus, colicky pain) or intussusception are evaluated if a polyp is suspected as a lead point."
      },
      {
        "title": "Recognizing when it is not a simple solitary polyp",
        "content": "Raise concern for juvenile polyposis syndrome, rather than a benign solitary polyp, if colonoscopy reveals five or more juvenile polyps, if polyps are found in the stomach or small intestine, or if there is a family history of juvenile polyposis syndrome — any of these findings changes the malignancy risk profile dramatically (about 30-fold increased colorectal cancer risk) and warrants genetic counseling and a structured surveillance plan rather than simple removal and reassurance. In an infant under 2 with rectal bleeding plus [[354|chronic diarrhea]], failure to thrive, or protein-losing enteropathy, consider juvenile polyposis of infancy, a severe form that may need early endoscopic or surgical intervention. Distinguish Peutz-Jeghers syndrome by its characteristic perioral/mucocutaneous pigmentation and family history, and reserve concern for a premalignant adenomatous polyp (with a roughly decade-long transformation window) for children with a family history of familial adenomatous polyposis or Gardner syndrome. Always send removed polyps for histology to confirm which of these categories applies before finalizing counseling and follow-up plans."
      }
    ]
  },
  {
    "article_id": 377,
    "article_title": "Insomnia",
    "sections": [
      {
        "title": "Evaluating a Child with Insomnia",
        "content": "Evaluation starts by placing the sleep complaint in context: questions are asked about family factors (parental stress, maternal depression), child factors (temperament, developmental stage), and the sleep environment (noise, light, room temperature, bedding, cultural sleeping arrangements), since insomnia is often defined more by parental concern than objective criteria. In infants and toddlers, sleep-onset association type (child needs rocking, feeding, or parental presence to fall or return to sleep, cannot self-soothe after normal brief nighttime arousals) is distinguished from limit-setting type (bedtime stalling or refusal from inadequate caregiver limits) - both are common in the 6-month to 2-year range, affecting 20-30% of infants, toddlers, and preschoolers, and both respond to consistent bedtime limits and sleep hygiene rather than medication. In older children and adolescents, specific questions are asked about worry surrounding sleep itself (suggesting psychosocial/primary insomnia), inadequate sleep hygiene (irregular schedules, caffeine, screens/homework/TV in bed, large weekday-weekend shifts), and symptoms of an underlying [[94|mental health]] or neurodevelopmental condition (anxiety, depression, ASD, ADHD), since insomnia due to a mental disorder tracks that condition's severity. A primary insomnia diagnosis is reserved for symptoms lasting at least 1 month with significant functional impairment or distress and no better explanation, and comprehensive evaluation (with sleep specialist or behavioral psychology referral as needed) is pursued when insomnia appears secondary to another medical or [[179|sleep disorder]]."
      },
      {
        "title": "Managing Insomnia Without Over-Medicating",
        "content": "Management leads with behavioral treatment: for young children, caregivers are coached on consistent bedtime limits, an appropriate sleep-conducive environment, and helping the child build self-soothing skills rather than relying on parental presence to fall asleep. For older children and adolescents, behavioral interventions targeting sleep-related worry are applied and inadequate sleep hygiene is corrected (consistent sleep/wake times, removing screens and stimulating activities near bedtime, restricting the bed to sleep). Medication is treated as a last resort in otherwise healthy children - agents like diphenhydramine, clonidine, or melatonin are used in practice, but indiscriminate use can obscure the real cause of insomnia and short-circuit needed behavioral work, so any medication trial is paired with, not used instead of, behavioral management. Ordinary nighttime fears (tearful, fearful bedtime behavior from normal cognitive development, relieved by sleeping near a household member) are distinguished from true insomnia so families are not treated for the wrong problem."
      }
    ]
  },
  {
    "article_id": 378,
    "article_title": "Language Delay",
    "sections": [
      {
        "title": "Initial evaluation in the clinic",
        "content": "When a parent raises concern about delayed speech, the first step is to characterize whether development follows the normal sequence at a slower pace (delay) or shows an atypical/deviant pattern (possible disorder), and to note whether expressive language alone or both receptive and expressive language are affected. Birth order, bilingual home exposure, or \"laziness\" are not accepted as an explanation — these have never been shown to cause delay, and accepting them risks missing a true underlying cause. Screening is directed specifically at the most common causes: overall developmental level is assessed (intellectual disability accounts for about half of cases, with speech often disproportionately delayed relative to other domains), formal audiologic testing by an audiologist (not an in-office screen) is arranged given how commonly [[248|hearing loss]] underlies delay, and examination looks for structural anomalies (cleft palate) or signs of [[117|autism spectrum disorder]]. Questions are asked about chronic ear infections/effusion, prematurity, and family history of language or reading difficulty, all of which raise risk."
      },
      {
        "title": "Referral, monitoring, and counseling",
        "content": "A multidisciplinary evaluation is arranged for any child with a persistent or concerning language delay: psychologic/neurodevelopmental evaluation with social-skills assessment, formal speech-language evaluation, audiologic assessment, and a full pediatric exam. Referral is not delayed for an extended \"wait and see\" period — early intervention improves outcomes, and about 60% of children with early delay catch up by age 4, especially with timely support, while persistent delay at school age carries real risk for language-based [[114|learning disability]]. If the delay is dissociated across language domains (e.g., markedly different expressive versus receptive skills) rather than a uniform slower pace, this preschool pattern is considered to meet DSM-5 criteria for language disorder rather than simple delay, which should prompt more structured, ongoing therapy rather than a wait-and-see approach. Expectations are set that therapy improves outcomes but a true language disorder often does not fully resolve, so ongoing monitoring into the school years is appropriate even after initial improvement."
      }
    ]
  },
  {
    "article_id": 379,
    "article_title": "Intracranial Hemorrhage",
    "sections": [
      {
        "title": "Recognizing ICH by Age and Presentation",
        "content": "In a preterm infant, especially very low birthweight (under 1,500 g), a high index of suspicion is maintained for germinal matrix/[[299|intraventricular hemorrhage]], which is often spontaneous and can occur without apparent trauma; unexplained motor agitation together with apnea or breathing irregularity should raise concern for intracerebellar parenchymal hemorrhage specifically. In a well term neonate with new-onset, characteristically brief seizures and an otherwise normal interictal exam around day 2 of life, primary subarachnoid hemorrhage is considered - reassurance is given that long-term outcome is typically good once confirmed by CT or MRI (lumbar puncture can be suggestive). In an older child, sudden severe headache, especially with vomiting, irritability, seizures, or altered sensorium, is treated as a possible significant intracranial bleed and CT is obtained promptly; small hemorrhages can present subtly and be missed without a high index of suspicion. Hemorrhagic stroke is considered in any child with [[162|sickle cell disease]] presenting with acute neurologic symptoms, since SCD raises risk of both ischemic and hemorrhagic stroke."
      },
      {
        "title": "Directing the Etiologic Work-Up",
        "content": "Once hemorrhage is confirmed, tailor further work-up to age and clinical context: in neonates, consider birth trauma, hypoxic-ischemic injury, and coagulopathy/[[400|thrombocytopenia]] (including fetal/neonatal alloimmune thrombocytopenia) for extra-axial term hemorrhage, versus prematurity-related germinal matrix fragility for IVH. In older children, pursue vascular imaging (angiography in selected cases) to look for a congenital vascular anomaly, the most common cause of childhood hemorrhagic stroke, and check coagulation studies and platelet count, particularly in a child with cancer, where spontaneous ICH is essentially confined to those with platelets under 5,000/uL - correct any coagulopathy or severe thrombocytopenia urgently in this setting. When a cavernous malformation is found (often incidentally on MRI), use the Zabramski classification, hemorrhage history, and lesion location (brainstem carries higher risk) to guide referral for surgical excision versus observation."
      }
    ]
  },
  {
    "article_id": 380,
    "article_title": "Lateral Ligament Injury",
    "sections": [
      {
        "title": "Bedside evaluation of the injured ankle",
        "content": "In a child presenting with ankle pain, swelling, and bruising after an inversion/plantarflexion injury, examine carefully to localize tenderness: if it is confined to the distal fibula and/or adjacent lateral ligaments, distal to the tibial anterior joint line, apply the Low-Risk Ankle Rule — this pattern is 100% sensitive for excluding a clinically important fracture in children ages 3-16 and can safely avoid radiography, covering lateral ankle sprains, nondisplaced Salter-Harris I/II fractures of the distal fibula, and avulsion fractures. If tenderness extends beyond this distribution, or the child is too young to reliably localize pain, obtain radiographs, keeping in mind that a real physeal or [[219|occult fracture]] can still be present despite an initially normal film. In a toddler with an unwitnessed fall and new limp or refusal to walk, keep toddler's fracture and occult foot fractures on the differential even when x-rays look clean."
      },
      {
        "title": "Treatment and follow-up",
        "content": "For a confirmed lateral ligament sprain, manage conservatively with ice, elevation, and a protective brace; grade the injury (1: stretch, 2: partial tear, 3: complete tear) to guide expectations, reserving MRI for suspected grade 3 injury or concern for concomitant intra-articular derangement. When a young child has a normal initial x-ray but a clinical picture concerning for toddler's fracture, Salter-Harris I injury, or stress fracture, immobilize empirically and plan follow-up imaging in 1-2 weeks, since radiographic confirmation is often delayed even when a true fracture is present — this avoids both unnecessary anxiety over a falsely reassuring film and the risk of growth disturbance from an unrecognized, unprotected physeal injury."
      }
    ]
  },
  {
    "article_id": 381,
    "article_title": "Juvenile Dermatomyositis",
    "sections": [
      {
        "title": "Recognizing and Diagnosing JDM",
        "content": "JDM is suspected in a child (median onset 7-11 years, bimodal peak at 3-7 years and early adolescence, girls more often than boys) with gradually progressive, symmetric proximal muscle weakness together with a heliotrope eyelid rash and/or Gottron papules over the knuckles or elbows. The Bohan and Peter criteria are applied: with the classic rash present, at least 3 of symmetric proximal weakness, elevated muscle enzymes (CK, AST, LDH, aldolase), characteristic EMG findings, or biopsy showing necrosis and inflammation are confirmed - though a normal CK does not exclude the diagnosis. MRI (STIR/T2 fat-saturated) is ordered as the preferred first-line imaging study to demonstrate symmetric proximal muscle inflammation (thighs, especially vastus lateralis/intermedius, more than pelvis or shoulders), with muscle biopsy or EMG reserved for diagnostically uncertain cases. The nailfolds are examined for capillary dilation with dropout, a useful supportive sign. In a child with proximal weakness but no rash, juvenile polymyositis or muscular dystrophy is considered and the same enzyme/MRI work-up is pursued, since JPM is managed identically to JDM once confirmed."
      },
      {
        "title": "Screening for Complications and Directing Management",
        "content": "Routine malignancy screening is not pursued in a child with JDM - unlike adult dermatomyositis, childhood disease is not a paraneoplastic syndrome. Screening is directed at extramuscular vasculopathic involvement instead: questions are asked about abdominal pain (intestinal ischemia risk), skin is monitored for ulceration, and cough or progressive dyspnea suggesting interstitial lung disease is watched for, with KL-6, anti-MDA5, anti-Jo-1, and IL-18 checked when ILD is a concern, since elevated levels flag risk for a rapidly progressive course. Dystrophic calcinosis is anticipated as a possible late finding (about 30% of patients), typically periarticular and appearing months to years after onset. In a child with skin findings alone and minimal muscle involvement (amyopathic JDM), reassurance is given that the pediatric form, unlike the adult one, is not linked to malignancy or ILD, but follow-up is arranged over several years since up to about a quarter go on to develop overt myositis. Early referral is made to [[221|pediatric rheumatology]], since JDM is relatively responsive to immunosuppressive therapy and prompt, adequate treatment improves long-term outcomes."
      }
    ]
  },
  {
    "article_id": 382,
    "article_title": "Myelomeningocele",
    "sections": [
      {
        "title": "Newborn assessment",
        "content": "At birth, the visible spinal defect is examined to characterize it as covered by thin epithelialized tissue or an exposed neural placode, and CSF leakage is watched for if a membrane is present, which raises infection risk and urgency for surgical closure. A careful neurologic exam is performed to localize the lesion level: lower-extremity tone and reflexes (flaccid paralysis and absent deep tendon reflexes below the lesion) and response to touch and pain are assessed, and associated deformities (clubfoot, hip subluxation) that reflect abnormal in-utero movement are looked for. Bladder and bowel function are assessed specifically — constant dribbling with a relaxed sphincter versus a high-pressure bladder with dyssynergy — since both patterns require urologic involvement from the outset. Cranial imaging is obtained given the near-universal association with Chiari II malformation and the 80-85% likelihood of hydrocephalus requiring shunt placement."
      },
      {
        "title": "Coordinating ongoing multidisciplinary care",
        "content": "A multidisciplinary team is established early — neurosurgery, urology, orthopedics, genetics, physiotherapy, and a coordinating primary care physician — since myelomeningocele affects nearly every organ system and requires lifelong management rather than a single intervention. Shunt complications and infections are monitored for, particularly in infancy, given their impact on cognitive development. Motor status is tracked over time: most children remain stable postoperatively, so new neurologic deterioration should prompt evaluation for tethered cord (the most common cause, a diagnosis of exclusion), syringohydromyelia, or cervical myelopathy from Chiari II, rather than being dismissed as expected progression. Latex precautions are taken throughout care given the roughly one-third prevalence of latex hypersensitivity. When a family considering prenatal surgery is counselled, the MOMS trial findings are presented accurately: prenatal repair can reduce shunt need and improve 30-month motor outcomes but carries real maternal and fetal risk, and the evidence base, per the 2014 Cochrane review, remains insufficient to make this a routine recommendation."
      }
    ]
  },
  {
    "article_id": 383,
    "article_title": "Laceration",
    "sections": [
      {
        "title": "Initial Management of a Pediatric Laceration",
        "content": "Address hemostasis first with direct pressure (tourniquet only if necessary), then assess the wound for depth and involvement of deeper structures - be especially vigilant with any neck laceration, given the proximity of the carotid arteries, jugular veins, trachea, and esophagus. For facial or intraoral lacerations, ask about the mechanism (a fall while running with an object in the mouth is classic for palatal injury), and treat any palatal or oropharyngeal laceration extending laterally as a potential great-vessel injury - admit for observation and pursue MR angiography if worrisome neurologic signs or symptoms develop. For a cervicofacial laceration from a dog bite, anticipate the need for special suturing technique, generally under conscious sedation, with general anesthesia reserved for extensive tissue defects."
      },
      {
        "title": "Anesthesia, Repair, and Recognizing Non-Accidental Injury",
        "content": "Topical LET (4% lidocaine, 1:2000 epinephrine, 0.5% tetracaine) is used for straightforward lacerations amenable to topical anesthesia, with 20-30 minutes allowed for effect and blanching at the site watched for as a sign of adequate anesthesia before proceeding, since fear and lack of cooperation can otherwise make repair difficult in children. While any laceration is evaluated, whether the location and pattern fit the stated mechanism is noted: greater concern for abuse is warranted when injuries are patterned (loop, cord, or belt marks) or located on soft-tissue areas (ears, neck, abdomen, buttocks, genitals) rather than bony prominences, when injuries are in multiple stages of healing, or when the laceration or bruise occurs in an infant who is not yet cruising or walking - \"children who don't cruise rarely bruise\" is a useful reminder that unexplained injury in this age group deserves careful scrutiny rather than routine reassurance."
      }
    ]
  },
  {
    "article_id": 384,
    "article_title": "Nocturnal Enuresis",
    "sections": [
      {
        "title": "Taking the history and exam",
        "content": "The history specifically covers the number of wet nights per week, the longest stretch of dryness ever achieved, evening fluid intake, daytime voiding frequency and symptoms (urgency, straining, weak stream, dribbling), constipation, and snoring or mouth breathing. The family is directly asked about a parental history of childhood bedwetting, since this is rarely volunteered but carries strong prognostic value (40% risk with one affected parent, 70% with both). On exam, hypertension or [[246|growth failure]] (chronic renal disease) is checked for, and a genital exam is performed for meatal stenosis or labial fusion, along with an abdominal exam for an enlarged bladder or kidneys. Urinalysis and culture are sent to exclude infection, and urine specific gravity is noted to screen for a concentrating defect. In a previously dry child with new-onset enuresis, abuse or a new emotional stressor is considered as a possible trigger and screened for accordingly."
      },
      {
        "title": "Choosing and escalating treatment",
        "content": "The child is classified as having monosymptomatic (nighttime-only) or nonmonosymptomatic (with daytime symptoms) enuresis, since this determines whether further evaluation is needed — monosymptomatic enuresis with a reassuring history and exam requires no further workup, while nonmonosymptomatic enuresis warrants closer attention to bladder/bowel dysfunction and possible urology involvement. Treatment starts with behavioral modification and alarm therapy as first-line treatment, particularly effective in younger children, and medication is reserved for older children, those with additional symptoms, or those who fail behavioral/alarm therapy. Constipation and ADHD are treated concurrently if present, since untreated comorbidities can undermine enuresis treatment. Imaging (renal ultrasound, VCUG) is reserved for children over age 10 with persistent enuresis or when history/exam suggests an organic cause (obstructive symptoms, [[187|hematuria]], hypertension, growth failure), rather than ordered routinely. Families are reassured that nocturnal enuresis causes no physical harm and has a high rate of spontaneous resolution, while its emotional impact on the child is still validated and addressed."
      }
    ]
  },
  {
    "article_id": 385,
    "article_title": "Laryngomalacia",
    "sections": [
      {
        "title": "Diagnosing and Triaging the Infant with Stridor",
        "content": "Laryngomalacia is suspected in an infant with inspiratory stridor beginning in the first 2-6 weeks of life that worsens with crying, feeding, agitation, and supine positioning, and improves prone and at rest - this pattern, together with normal oxygen saturation and a normal chest radiograph, supports an upper-airway (supraglottic) source rather than lower respiratory disease. Diagnosis is confirmed with awake flexible fiberoptic laryngoscopy, looking for the omega-shaped epiglottis, short aryepiglottic folds, and inspiratory prolapse of the arytenoid mucosa/cuneiform cartilage. Early airway examination (rather than waiting) is obtained in infants presenting under 4 weeks of age or with severe obstruction, since these presentations warrant ruling out an alternative cause. If stridor sounds wet, is accompanied by cough with feeds, or there is a history of recurrent respiratory illness or pneumonia, evaluation for dysphagia with a contrast swallow study or FEES is warranted, since laryngomalacia can impair suck-swallow-breath coordination. For infants with moderate to severe obstruction, complete bronchoscopy is performed, since 15-60% have a synchronous airway anomaly that would otherwise be missed."
      },
      {
        "title": "Managing the Expected Course and Recognizing Red Flags",
        "content": "Families are reassured that most laryngomalacia is mild, self-limited, and managed expectantly with positioning and treatment of any coexisting GERD, with symptoms typically peaking by about 6 months, improving from 7-9 months, and resolving completely by 12-18 months in the majority of infants. Reflux is screened for and treated, since GERD/laryngopharyngeal reflux can worsen severity and prolong the clinical course. Surgical evaluation (supraglottoplasty) is pursued for stridor at rest with retractions and increased work of breathing, or for chronic signs such as failure to thrive, [[311|obstructive sleep apnea]], hypoxemia, or severe dyspnea - these more severe presentations occur in only about 10-22% of cases. If stridor worsens or persists beyond the expected improving trajectory instead of following the typical course, reassessment for an alternate or coexisting diagnosis (such as an enlarging subglottic hemangioma, vocal cord paralysis, or subglottic stenosis) is warranted rather than continuing to attribute symptoms to uncomplicated laryngomalacia."
      }
    ]
  },
  {
    "article_id": 386,
    "article_title": "Parasitic Infection",
    "sections": [
      {
        "title": "Deciding whom and how to test",
        "content": "Before parasitic testing is ordered in a child with diarrhea, pretest probability is considered: more than 90% of stool O&P exams in the US are negative, and helminths are rarely the cause of diarrhea. Broad parasitic workup is reserved for children with a specific risk factor — travel to or residence in an endemic area, daycare attendance with a known outbreak, exposure to contaminated water (well water, a pool, a stream), or pet/animal contact — rather than ordering an O&P reflexively on every child with loose stools. When protozoal infection (Giardia, Cryptosporidium, Entamoeba) is genuinely suspected, molecular (PCR-based) stool testing is favored over traditional O&P microscopy, since these are now the more accurate and commonly used diagnostic approach for these organisms."
      },
      {
        "title": "Recognizing and managing giardiasis specifically",
        "content": "Giardiasis is suspected in a child with diarrhea and a history of exposure to potentially contaminated water (well water, a stream, or even a treated pool, since Giardia resists chlorination), daycare attendance, or a household contact with similar symptoms — remembering that 25% of infected individuals are asymptomatic, so an asymptomatic carrier in the household can be the ongoing source. Because pets are rarely a source of human Giardia infection (due to host-specific strain differences), exposure history focuses on water sources, daycare, and person-to-person contact rather than the family dog or cat. When antiparasitic treatment is selected for any confirmed parasitic infection, FDA approval status and pediatric-specific indications are verified before prescribing, since the antiparasitic drug landscape includes agents with limited approval or that are available only through the CDC."
      }
    ]
  },
  {
    "article_id": 387,
    "article_title": "Metabolic Acidosis",
    "sections": [
      {
        "title": "Working Up a Child with Metabolic Acidosis",
        "content": "BUN, creatinine, glucose, urinalysis, and electrolytes are obtained as baseline studies, and the anion gap is calculated to narrow the differential. In an acutely ill child, diarrhea (stool bicarbonate loss), shock/lactic acidosis (perfusion is assessed carefully - dehydration, blood loss, sepsis, and heart disease can all present this way), and DKA (glucose, urine ketones and glucose are checked) are considered the most common acute causes. In a child with ketosis and only mild acidosis (bicarbonate above 18 mEq/L) attributed to poor intake, a concurrent illness such as gastroenteritis is actively sought, since starvation ketosis alone rarely explains significant acidosis. Metabolic acidosis with seizures or depressed sensorium in an infant is treated as a possible inborn error of metabolism until proven otherwise, with accompanying hypoglycemia or hyperammonemia checked for, while meningitis/sepsis with lactic acidosis is considered the more common explanation when neurologic signs and acidosis coexist without a metabolic-disease history. In a child with failure to thrive and chronic acidosis, evaluation for renal insufficiency or renal tubular acidosis is undertaken, including Fanconi syndrome-associated type II RTA (normoglycemia with glycosuria) and adrenal insufficiency (acidosis with hypoglycemia). Medication exposure and possible [[338|toxic ingestion]] (ethylene glycol, methanol) are always asked about, since these are treatable causes with excellent response to specific therapy when identified promptly."
      },
      {
        "title": "Treating Metabolic Acidosis Safely",
        "content": "Treatment is directed first at correcting the underlying cause - rehydration and treatment of the precipitating illness, rather than bicarbonate, resolves most cases. Fluid balance is corrected in infants with a dilutional component to their acidosis. For chronic acidosis from ongoing bicarbonate loss, bicarbonate supplementation is added directly to feeds. Reflexive intravenous sodium bicarbonate bolus for acute acidosis is avoided: it is reserved for severely unstable, persistently acidotic infants who have failed other measures, and only when the infant is intubated/ventilated or breathing well enough spontaneously to clear the resulting CO2 load, given the risks of volume overload, [[379|intracranial hemorrhage]], hypernatremia, worsened respiratory acidosis, impaired oxygen delivery, and paradoxical intracellular acidosis. Families are counselled that chronic acidosis causes reversible [[246|growth failure]], and that adequate correction (for example, in [[284|chronic kidney disease]] with bicarbonate or citrate) is important specifically for growth and bone health, not simply for normalizing a lab value."
      }
    ]
  },
  {
    "article_id": 388,
    "article_title": "Phenylketonuria (Pku)",
    "sections": [
      {
        "title": "Confirming and initiating treatment for a positive newborn screen",
        "content": "When a newborn screen returns positive for PKU, start a low-protein diet and phenylalanine-free medical formula as soon as possible, then confirm the diagnosis with further testing (quantitative phenylalanine level, and genetic testing as indicated) — do not wait for confirmatory results before beginning dietary intervention, since delay risks irreversible intellectual disability, and damage becomes irreversible by about 8 weeks of age. Verify that the state's newborn screen was actually performed, given that many primary care clinicians are now unfamiliar with untreated PKU phenotypes precisely because screening has made the untreated disease rare. If an infant is not caught by screening, a characteristic musty/mousy odor, fair complexion relative to family members, [[288|eczema]], vomiting, or irritability should prompt urgent phenylalanine testing (a urine ferric chloride test can be done acutely) rather than waiting for developmental delay to become apparent."
      },
      {
        "title": "Ongoing management and special scenarios",
        "content": "Confirmed PKU is managed with a lifelong phenylalanine-restricted diet under the guidance of a metabolic clinic and a nutritionist experienced in PKU, aiming for good phenylalanine control by 3-4 weeks of age and sustained control thereafter to maximize neuropsychological outcome. Continued breastfeeding is supported where desired, but phenylalanine levels are monitored closely given ongoing intake from breast milk. Patients and families are counselled to avoid aspartame. For a newborn of a mother with known PKU, phenylalanine levels are measured once enteral feeding is established, and early quantitative amino acid analysis is considered rather than relying on routine newborn screening alone, given the child's elevated background risk (about 1 in 80) and the possibility of in-utero phenylalanine-related effects (microcephaly, congenital heart disease, intellectual disability) even in a heterozygous, unaffected infant if maternal phenylalanine control was inadequate during pregnancy."
      }
    ]
  },
  {
    "article_id": 389,
    "article_title": "Neurofibromatosis Type 1",
    "sections": [
      {
        "title": "Diagnosing NF1 in a Child",
        "content": "The 2-of-7 criteria are applied systematically: 6 or more cafe-au-lait macules (over 5 mm prepubertal, over 15 mm postpubertal), 2 or more neurofibromas of any type or 1 plexiform neurofibroma, axillary/inguinal freckling, optic pathway glioma, 2 or more Lisch nodules, a distinctive osseous lesion, or a first-degree relative with NF1. Cafe-au-lait macules are expected from birth, freckling by adolescence in about 75% of cases, and Lisch nodules on slit-lamp exam in about 75% of prepubescent children after age 3 - so a young child may only show cafe-au-lait spots initially. When a child has 6 or more cafe-au-lait macules but no other criterion yet, NF1 is not dismissed - the child is followed clinically, since about 95% eventually meet full diagnostic criteria (usually by 8-10 years of age). Referral to ophthalmology for slit-lamp exam and screening is made whenever NF1 is suspected or diagnosed, given the risk of Lisch nodules and, more importantly, optic pathway glioma (occurring in 15-20% of NF1 children, usually before age 6), which can cause visual loss or [[222|precocious puberty]]. In counseling families, both parents are evaluated carefully, since about half of cases are inherited (autosomal dominant, nearly full penetrance) and half are new mutations - this distinction matters for genetic counseling of the family."
      },
      {
        "title": "Monitoring for Complications",
        "content": "Expectations are set that NF1 manifestations emerge over time rather than all at once, and that about two-thirds of patients have a mild course while the remaining third face a range of unpredictable complications - so periodic, structured monitoring (rather than one-time reassurance) is the right model of care. [[114|Learning disability]] is actively screened for and addressed, since it affects 30-60% of children with NF1 and is a major driver of quality of life, independent of physical manifestations. Signs of vascular dysplasia (moyamoya arteriopathy, in 3-7% of children) are watched for if new neurologic symptoms develop, and optic pathway and brainstem gliomas in NF1 tend to behave more indolently than in children without NF1, which can inform a more conservative initial approach to management in consultation with neuro-oncology."
      }
    ]
  },
  {
    "article_id": 390,
    "article_title": "Polycystic Ovary Syndrome",
    "sections": [
      {
        "title": "Diagnosing PCOS in the adolescent",
        "content": "In an adolescent at least 2 years post-menarche with irregular cycles (under 21 or over 45 days in years 1-3 post-menarche, or under 21/over 35 days or fewer than 8 cycles/year beyond that, or any cycle over 90 days), evaluation is made for both hyperandrogenism (clinical: hirsutism, moderate-to-severe acne, male-pattern alopecia; biochemical: elevated free/total testosterone, DHEA-S, androstenedione) and other causes of irregular cycles (thyroid dysfunction, hyperprolactinemia) are excluded before PCOS is diagnosed — this evaluation is done before oral contraceptives are started for the irregular cycles, since starting hormonal therapy first can mask the underlying picture. Pelvic ultrasound is not relied upon in this age group: polycystic-appearing ovaries are a normal finding in many adolescents from ongoing pubertal anovulatory cycles, so the adult ultrasound criterion should not be applied. True virilization (clitoromegaly, voice change, rapidly progressive hirsutism) is specifically watched for — this is not consistent with PCOS and should prompt evaluation for a more severe androgen-excess condition instead."
      },
      {
        "title": "Managing the adolescent with PCOS",
        "content": "Once PCOS is diagnosed, screen for its common comorbidities, especially in an overweight or obese adolescent: lipid panel, glucose tolerance/HbA1c for type 2 diabetes risk, evaluation for [[311|obstructive sleep apnea]], and screening for depression and anxiety. Emphasize lifestyle intervention as first-line management — even a 5-10% weight loss can meaningfully improve symptoms — and counsel that a BMI over 30 limits fertility, so weight management also serves reproductive goals. For endometrial protection, ensure at least 4 menstrual periods per year unless the patient is on contraception, given the endometrial cancer risk from chronic anovulation and unopposed estrogen. Individualize further treatment (hormonal therapy, antiandrogens, metformin) based on the patient's predominant symptoms — menstrual irregularity, hyperandrogenism, or metabolic features — rather than a one-size-fits-all regimen."
      }
    ]
  },
  {
    "article_id": 391,
    "article_title": "Oligohydramnios",
    "sections": [
      {
        "title": "Recognizing Oligohydramnios and Anticipating Neonatal Findings",
        "content": "When reviewing prenatal history, treat a documented MVP under 2 cm as oligohydramnios and specifically ask about the likely cause: membrane rupture, placental insufficiency, postdate gestation, chronic hypertension, or a suspected fetal renal/urinary anomaly. On the newborn exam, actively look for the Potter sequence facies (recessed chin, low-set posteriorly rotated ears, flattened or beaked nose, suborbital creases) and limb findings (clubfoot/clubhand, joint contractures, hip dislocation) whenever oligohydramnios was noted antenatally, and anticipate respiratory distress from pulmonary hypoplasia - have a low threshold for respiratory support and be prepared for [[396|pneumothorax]]. In a male newborn with prenatal oligohydramnios and hydronephrosis, evaluate for [[399|posterior urethral valves]] (voiding difficulty, poor stream, urinary ascites) as well as bilateral renal agenesis or severe cystic renal disease, since these differ substantially in management and prognosis despite a similar antenatal fluid picture."
      },
      {
        "title": "Counseling and Coordinating Care",
        "content": "Because severe oligohydramnios from bilateral renal agenesis or severe renal dysplasia carries an extremely high mortality risk (respiratory insufficiency from pulmonary hypoplasia), antenatal counseling is coordinated with maternal-fetal medicine and neonatology as soon as significant oligohydramnios with a suspected renal cause is identified, so families understand the prognosis before delivery. For infants who survive the immediate perinatal period, the broader pattern of associated anomalies (cardiac defects, GI atresias, imperforate anus, Pierre Robin sequence) is screened for rather than assuming an isolated renal or pulmonary problem. Developmental dysplasia of the hip is screened for in any infant with a history of oligohydramnios, since intrauterine crowding increases this risk; most minor ultrasound findings between 6 weeks and 4 months resolve with observation, but referral to orthopedics is made if clinical instability (positive Barlow test) persists."
      }
    ]
  },
  {
    "article_id": 392,
    "article_title": "Post-Concussion Syndrome",
    "sections": [
      {
        "title": "Initial assessment after a head injury",
        "content": "Any child with a blow to the head, face, neck, or body is evaluated for the five symptom categories of [[200|concussion]]: somatic (headache, dizziness, nausea, light/noise sensitivity, fatigue), vestibular, cognitive (amnesia, confusion, difficulty concentrating), emotional (irritability, anxiety), and sleep-related. Loss of consciousness occurs in fewer than 5% of concussions and does not predict severity or recovery time, so its absence should not be reassuring nor its presence alarming on its own. Laboratory workup (CBC, electrolytes, glucose, toxicology, coagulation studies) is reserved for significant [[139|head trauma]] or altered consciousness, rather than routine concussion presentations. Risk factors for prolonged recovery — female sex, [[308|migraine]] history, prior concussion, family/social stressors, a neurodevelopmental disorder, or psychiatric illness — are specifically asked about, since initial symptom burden combined with these factors helps anticipate which children are more likely to develop persistent postconcussion symptoms."
      },
      {
        "title": "Managing recovery and return to activity",
        "content": "Management starts with cognitive and physical rest, favoring a reduction rather than complete elimination of activity, with the plan individualized to the child's specific symptom spectrum. A stepwise, progressive return-to-activity program is used for both school and sport, advancing physical and cognitive demands gradually while monitoring for symptom recurrence at each stage — advancement does not continue if symptoms return. Athletes and families are counselled that a second head injury before full recovery from the first risks second impact syndrome, a catastrophic and sometimes fatal complication, so strict avoidance of return to play until complete symptom resolution is essential. Referral for formal neuropsychological or neurobehavioral testing is made when recovery extends beyond the usual 7-10 day window or symptoms are substantially interfering with school or daily function. For athletes with a history of multiple concussions, especially those from progressively lesser force, taking longer to resolve, or showing a change from baseline, a more conservative eligibility decision is favored for continued contact or collision sport participation."
      }
    ]
  },
  {
    "article_id": 393,
    "article_title": "Peanut Allergy",
    "sections": [
      {
        "title": "Deciding When and How to Introduce Peanut",
        "content": "Every infant is stratified by [[288|eczema]] severity and egg-allergy status before deciding on peanut introduction timing. For an infant with severe eczema, egg allergy, or both, referral for peanut-specific IgE and/or skin prick testing (with an oral food challenge if results are indeterminate) is strongly considered before peanut is introduced, aiming for introduction as early as 4-6 months once safety is established; a skin prick wheal of 0-2 mm is interpreted as low risk (introduce at home or in a supervised office feeding), 3-7 mm as moderate-to-severe risk (refer to a specialist or arrange supervised office feeding), and 8 mm or more as very likely allergic (continue management with a specialist) - the same risk tiers apply to peanut-specific IgE using the 0.35 kUA/L cutoff. For an infant with mild-to-moderate eczema, peanut-containing foods are introduced around 6 months without needing prior testing. For an infant with no eczema or known food allergy, peanut-containing foods are introduced whenever age-appropriate, per family preference and cultural practice. Families are not counselled to delay peanut introduction as a preventive strategy, even with a strong family history of allergy - the evidence (LEAP trial) instead supports early, regular introduction (at least 6 g of peanut protein over 3+ meals weekly in high-risk infants) as protective, cutting allergy risk from about 17% to about 3% by age 5 in that population."
      },
      {
        "title": "Managing a Reaction and Ongoing Care",
        "content": "Any presentation of rash, swelling, and wheezing after peanut exposure is treated as [[143|anaphylaxis]]: epinephrine is given promptly, along with antihistamines and systemic corticosteroids, and observation for a late-onset (biphasic) reaction occurs before discharge. After stabilization, a complete allergy evaluation and allergist referral are arranged for any child suspected of having peanut allergy - history alone is not relied upon given the risk of both under- and overdiagnosis. The family is equipped with a written avoidance plan, instruction on careful food-label reading, an epinephrine auto-injector to be carried at all times, and a medical alert bracelet. Families are counselled that most children with peanut allergy do not outgrow it, and that any resolution occurs almost exclusively within the first 5 years of life - so ongoing allergist follow-up and periodic reassessment (rather than a one-time diagnosis) is the appropriate long-term model of care."
      }
    ]
  },
  {
    "article_id": 394,
    "article_title": "Primary Amenorrhea",
    "sections": [
      {
        "title": "Deciding when to evaluate",
        "content": "The proactive evaluation thresholds are applied rather than waiting until age 16: referral or workup is begun for a girl with no menses by age 15 despite normal growth and secondary sexual characteristics, no menses more than 3 years after thelarche onset, or no secondary sexual characteristics at all by age 13. Evaluation is prompt, regardless of age, if delayed secondary sexual development accompanies the amenorrhea or if cyclic pelvic pain is present alongside primary amenorrhea, since the latter suggests an outflow tract obstruction (imperforate hymen, transverse vaginal septum) with trapped menstrual blood that needs timely surgical attention. In a competitive female athlete, any positive menstrual-history screening question (absent menarche by 15, menarche not within 5 years of initial breast development) is treated as a trigger for further endocrine and gynecologic evaluation, with low energy availability considered alongside other causes."
      },
      {
        "title": "Structuring the initial workup",
        "content": "Always rule out pregnancy first, even in a girl who denies sexual activity and even though primary amenorrhea from pregnancy is rare. Given that chromosomal/gonadal dysgenesis (especially Turner syndrome) and outflow tract anomalies (Müllerian agenesis, imperforate hymen, transverse vaginal septum) together account for the majority of primary amenorrhea, examine pubertal staging and external genitalia carefully, and consider karyotype and pelvic imaging early rather than late in the workup. If secondary sexual characteristics (especially breast development) are present but pubic/axillary hair is sparse or absent, consider androgen insensitivity syndrome and check LH/FSH and karyotype. If the clinical picture suggests chronic illness, undernutrition, excessive exercise, or disordered eating, evaluate for hypothalamic suppression as a diagnosis of exclusion — but only after structural and chromosomal causes have been reasonably excluded, since hypothalamic dysfunction should not be assumed by default."
      }
    ]
  },
  {
    "article_id": 395,
    "article_title": "Short Bowel Syndrome",
    "sections": [
      {
        "title": "Recognizing and assessing the newborn at risk",
        "content": "In a neonate who has undergone significant small bowel resection — most often for necrotizing enterocolitis, but also intestinal atresia, gastroschisis, or volvulus — anticipate short bowel syndrome and assess the specific prognostic factors early: residual bowel length, whether the ileocecal valve and ileum were preserved, whether the colon is intact, and the health of other digestive organs (stomach, pancreas, liver). Recognize that an NEC or gastroschisis etiology tends to predict a more prolonged clinical course than other causes. Watch for [[354|chronic diarrhea]], [[214|malnutrition]], and failure to thrive as the presenting pattern, and monitor closely for colitis-like symptoms when enteral feeding is initiated. If abdominal wall edema, [[353|cellulitis]], distention, or crepitus develop, treat this as a sign of delayed recognition of a severe complication requiring urgent attention, since delay risks severe SBS or death."
      },
      {
        "title": "Nutritional management and monitoring",
        "content": "Total parenteral nutrition is started in the immediate postoperative period to meet caloric, fluid, and electrolyte needs while the bowel is insufficient, but enteral feeding is introduced as early as feasible, since this maximizes enteric hormonal stimulation and promotes bowel adaptation (elongation, hypertrophy, and slowed peristalsis) rather than leaving the bowel unstimulated. Recovery can take years, sometimes requiring TPN for the first several years of life, and a multidisciplinary short bowel program is involved early, given the substantial survival benefit these programs and improved catheter/PNALD management have demonstrated (over 90% survival in recent series). The specific prognostic factors are tracked over time — residual bowel adaptive potential, infection frequency, and the function of other organs — to guide the pace of weaning from parenteral nutrition and to identify children who may eventually need consideration for intestinal transplantation."
      }
    ]
  },
  {
    "article_id": 396,
    "article_title": "Pneumothorax",
    "sections": [
      {
        "title": "Recognizing and Decompressing a Pneumothorax",
        "content": "In a neonate with respiratory distress - especially a premature infant with surfactant deficiency, a meconium aspiration history, or one receiving positive pressure ventilation or high PEEP - maintain a high suspicion for pneumothorax, since it can progress rapidly to a tension pneumothorax. For significant respiratory distress with suspected pneumothorax, decompress immediately with a large syringe, 20-gauge needle, or catheter-over-needle and three-way stopcock at the fourth intercostal space anterior axillary line or the second intercostal space midclavicular line, then place an 8F chest tube using standard technique. In a child with asthma who acutely deteriorates, particularly on mechanical ventilation, suspect pneumothorax or pneumomediastinum even without classic findings, since up to 30% of associated pneumomediastinum cases are initially missed on radiography - maintain a low threshold to repeat imaging or escalate care."
      },
      {
        "title": "Identifying the Underlying Cause",
        "content": "In a tall, thin adolescent male presenting with sudden chest pain and dyspnea without trauma, primary spontaneous pneumothorax is considered, with smoking, vaping, or drug use (marijuana, cocaine, MDMA) asked about, and CT imaging for apical blebs is considered if recurrence or diagnostic uncertainty exists; an underlying connective tissue disorder (Marfan syndrome, Ehlers-Danlos syndrome) is also considered if there are supporting physical features or family history. In a child with known asthma, cystic fibrosis, or another chronic lung disease presenting with pneumothorax, it is classified as secondary spontaneous pneumothorax, and the underlying disease is addressed alongside the acute air leak. Iatrogenic causes (recent central line placement, intubation, biopsy, or mechanical ventilation) are considered in any hospitalized child who develops sudden respiratory decline. In an adolescent female with recurrent spontaneous pneumothorax temporally linked to menstruation, the rare diagnosis of catamenial pneumothorax is considered and appropriate referral made, since standard management alone will not address the underlying diaphragmatic defect. Even a small, seemingly stable pneumothorax in a child should prompt admission for observation given its potential to progress."
      }
    ]
  },
  {
    "article_id": 397,
    "article_title": "Substance Intoxication",
    "sections": [
      {
        "title": "Initial stabilization and history-taking",
        "content": "Airway, breathing, circulation, and mental status assessment are prioritized immediately in any child with suspected substance intoxication, before a detailed history or diagnostic workup is pursued. Once stabilized, a comprehensive history is gathered from witnesses, family, and friends about the nature of the substance, timing, and circumstances, recognizing that a clear history is often unavailable and that toxicology screening does not always clarify the picture — a high index of suspicion is maintained regardless. Passive or environmental exposure (transplacental, breast milk, inhalation, or presence where drugs are used or manufactured) is considered in an infant or young child with unexplained intoxication signs, and substance use or withdrawal is considered in any adolescent with chronic, persistent irritability. Examination for pallor (hemolysis) or cyanosis (methemoglobinemia) is performed as clues to specific toxic mechanisms, and evaluation for ataxia and metabolic derangement (hypoglycemia, [[170|hyponatremia]], hyperammonemia) is done alongside the standard exam."
      },
      {
        "title": "Management principles and prevention",
        "content": "Follow the standard sequence: stabilize ABCs, remove the source of poison, provide supportive care, decontaminate (GI tract, skin, eyes, or other exposed body cavity as relevant), consider measures to hasten elimination of absorbed toxin, and give a specific antidote when one exists. For adolescents specifically, screen proactively for alcohol use at every visit rather than waiting for a presentation of intoxication, given that alcohol is the most commonly abused substance in this age group and binge drinking prevalence rises sharply with age (about 50% of drinkers at 12-14 years to about 72% at 18-20 years); remember that alcohol exposure in children can come from unexpected sources like hand sanitizer, mouthwash, and food extracts, not just beverages. Emphasize prevention — safe storage of medications and household chemicals, anticipatory guidance for families with toddlers, and routine adolescent substance-use screening — since prevention is more effective than intervention after intoxication has already occurred."
      }
    ]
  },
  {
    "article_id": 398,
    "article_title": "Polytrauma",
    "sections": [
      {
        "title": "Initial Assessment of the Polytrauma Patient",
        "content": "Every child with polytrauma is approached using the ABCDE sequence, with airway prioritized above all else, since airway compromise kills faster than any other injury - assessment is made for obstruction from positioning, blood, teeth, vomitus, or foreign material, and level of consciousness, maxillofacial injury, and stridor or cyanosis are evaluated. The cervical spine is protected throughout the assessment and stabilization process in every child with polytrauma, regardless of the apparent primary injury site. A length-based tool is used to estimate weight quickly for accurate drug dosing and equipment sizing rather than waiting for an actual weight. Internal injury is actively suspected whenever the mechanism of injury is severe enough to cause it, even in the complete absence of external signs of trauma, given children's thinner protective musculature and padding. A normal blood pressure does not rule out significant blood loss - children can lose 25-30% of their circulating volume while maintaining a normal systolic pressure - so other perfusion markers (heart rate, capillary refill, mental status) are relied upon rather than blood pressure alone to assess for hemorrhagic shock."
      },
      {
        "title": "Managing Shock and Coordinating Ongoing Care",
        "content": "If a child remains in shock despite adequate initial fluid/blood resuscitation, the differential is broadened beyond ongoing hemorrhage to include neurogenic shock, cardiac contusion, and cardiac tamponade, and investigated accordingly rather than simply escalating volume resuscitation. Care is organized under a single multidisciplinary team leader when multiple specialties (neurosurgery, orthopedics, general/trauma surgery, plastic surgery) are involved, and continuous monitoring is maintained after initial resuscitation, since deterioration can occur even after apparent stabilization. The Pediatric Trauma Score is used to help gauge severity and, for very low scores, rapid transport to the nearest facility is prioritized over transfer to a more specialized but more distant center. Psychological and social support is built into the care plan from the time of resuscitation onward, recognizing that polytrauma can affect the developing brain and contribute to long-term morbidity beyond the physical injuries themselves."
      }
    ]
  },
  {
    "article_id": 399,
    "article_title": "Posterior Urethral Valves",
    "sections": [
      {
        "title": "Recognizing and Confirming PUV",
        "content": "Bilateral hydronephrosis in a male infant, whether identified prenatally or postnatally, is treated as an urgent indication to exclude posterior urethral valves. In a neonate with a palpable [[235|abdominal mass]], hypertension, urinary ascites, or unexplained renal failure, PUV is included in the differential and a voiding cystourethrogram, the key diagnostic study, is obtained, looking for a dilated/elongated posterior urethra, thickened trabeculated bladder, bladder neck hypertrophy, and [[271|vesicoureteral reflux]]. Parental report of a weak urinary stream is not relied upon to trigger evaluation, since most children with PUV are not brought in for this symptom specifically - suspicion is maintained based on the broader clinical picture (vomiting, poor weight gain, abdominal distention, recurrent UTI) since more than half of cases are not diagnosed until several months of age. In an older boy with incontinence, recurrent UTI, or unexplained renal impairment, previously unrecognized PUV is considered as part of the work-up."
      },
      {
        "title": "Managing PUV and Its Renal Consequences",
        "content": "Endoscopic fulguration of the valves is arranged as early as feasible once the diagnosis is confirmed; cutaneous vesicostomy or another temporary diversion is reserved for very small infants in whom endoscopic treatment is not practical. Renal function (creatinine, BUN) and electrolytes are checked at diagnosis, and evaluation for vesicoureteral reflux is performed, since about half of neonates with PUV have VUR - prophylactic antibiotics are considered for higher-grade (3-5) reflux in infants and young children, weighing this against the risks of prolonged antibiotic exposure. Expectations are set with families that unilateral disease with contralateral renal sparing carries a better prognosis than bilateral involvement, and that even after technically successful valve ablation, about 30% of patients progress to chronic or end-stage renal disease because of underlying renal dysplasia established before birth - so long-term nephrology follow-up is needed regardless of surgical success. Nephrectomy is considered for a kidney with severely impaired function that does not improve with temporary nephrostomy, or that is a source of severe hypertension or recurrent infection."
      }
    ]
  },
  {
    "article_id": 400,
    "article_title": "Thrombocytopenia",
    "sections": [
      {
        "title": "Evaluating the well child with new bruising or petechiae",
        "content": "In an otherwise healthy 1- to 10-year-old presenting with sudden bruising, petechiae, or mucosal bleeding 1-4 weeks after a viral illness or vaccination, a CBC and peripheral smear are obtained: isolated thrombocytopenia with large platelets, normal white count and hemoglobin, normal PT/PTT, and no hepatosplenomegaly or lymphadenopathy is classic for ITP and needs no further testing initially. Pseudothrombocytopenia is ruled out first if the count seems inconsistent with the clinical picture, by redrawing in a citrate or heparin tube rather than EDTA. New medications (sulfonamides, vancomycin, valproic acid, phenytoin, carbamazepine, heparin) are specifically asked about as a cause of drug-induced thrombocytopenia, which should improve within 1-2 days of stopping the offending drug. If pancytopenia, anemia, organomegaly, lymphadenopathy, or an abnormal PT/PTT accompanies the thrombocytopenia, the workup is broadened (bone marrow exam, direct Coombs, ANA) to evaluate for leukemia, autoimmune disease, hemolytic uremic syndrome, or a marrow failure syndrome rather than assuming simple ITP."
      },
      {
        "title": "Managing ITP and counseling on risk",
        "content": "For classic ITP without significant bleeding, observation with serial platelet counts is a reasonable initial approach, since 60-75% resolve within 2-4 months regardless of treatment. Active treatment (IVIG, corticosteroids, or other agents) is reserved for significant bleeding or very low platelet counts, and platelet transfusion is used to manage an acute bleeding crisis. Families are counselled that [[379|intracranial hemorrhage]], while the most serious complication, occurs in under 1% of ITP cases; warning signs (severe headache, neurologic change) are nonetheless emphasized given the roughly one-third mortality when ICH does occur. In a menstruating adolescent with ITP, close monitoring for heavy menstrual bleeding occurs if the platelet count falls below 10,000/µL. If thrombocytopenia persists beyond 3-6 months, additional testing (HIV, hepatitis C, H. pylori, ANA, anticardiolipin antibodies) is pursued rather than continuing to assume self-limited acute ITP. In a newborn with thrombocytopenia, maternal history (preeclampsia, autoimmune disease, medications) is evaluated alongside neonatal causes (alloimmunization, [[155|congenital infection]], sepsis, NEC), and hematology is consulted if thrombocytopenia persists beyond 10 days of life."
      }
    ]
  },
  {
    "article_id": 401,
    "article_title": "Tinea Versicolor",
    "sections": [
      {
        "title": "Recognizing tinea versicolor at the bedside",
        "content": "Tinea versicolor is suspected in an adolescent or young adult with multiple small, oval, scaly patches on the upper chest, back, or upper arms that vary in color (white, pink, tan, or reddish-brown) and notably fail to tan with sun exposure, appearing lighter than surrounding skin in summer. In an infant or young child, facial involvement is looked for instead, particularly the bilateral temples. Diagnosis is confirmed with a Wood's lamp (yellowish-brown fluorescence) or KOH prep of a skin scraping, expecting the classic \"spaghetti and meatballs\" pattern of short hyphae and spore clusters. It is distinguished from vitiligo (which shows depigmentation rather than fine scale and a positive KOH), pityriasis alba, seborrheic dermatitis, and pityriasis rosea based on distribution, scale character, and KOH findings; secondary syphilis is considered in a sexually active adolescent with an atypical or resistant presentation."
      },
      {
        "title": "Treatment and counseling on recurrence",
        "content": "Treatment starts with selenium sulfide 2.5% suspension or zinc pyrithione shampoo applied to the entire affected area (and surrounding skin) and left on overnight, repeated in 1 week and then monthly to prevent recurrence; the patient is warned about potential skin irritation from this regimen. Alternatively, a topical antifungal cream is prescribed twice daily for 1-2 weeks, or a single 400 mg dose of oral fluconazole for a simpler regimen in an adolescent or adult. Patients are counselled that pigmentary changes (light or dark patches) can take weeks to months to fully resolve even after the infection itself has cleared, since this reflects residual pigment abnormality rather than persistent infection — this is expected and not treatment failure. Since Malassezia is normal skin flora and recurrence is common, advice is given on minimizing predisposing factors (excess heat, humidity, sweating, occlusive clothing) where practical."
      }
    ]
  },
  {
    "article_id": 402,
    "article_title": "Trichomoniasis",
    "sections": [
      {
        "title": "Evaluating a child or adolescent with suspected trichomoniasis",
        "content": "In a neonate with a thin, whitish or yellowish vaginal discharge appearing within the first 10 days of life, consider perinatally acquired trichomoniasis; treatment is not generally needed since this is typically self-limited, and intense social investigation is not automatically warranted given the known perinatal transmission route. In sharp contrast, any diagnosis of trichomoniasis in an older infant or prepubertal child should prompt a careful investigation for sexual abuse, including involvement of child protective services, since vaginal trichomoniasis is rare before menarche. Before concluding a urine specimen shows pathogenic T. vaginalis, confirm it is not the nonpathogenic GI contaminant Trichomonas hominis. In a postpubertal adolescent with vaginal itching, malodorous frothy discharge, or dysuria, examine for a strawberry cervix (present in only about 2% visibly) and perform a saline wet mount, but remember its sensitivity is only 60-70%, so a negative result in a symptomatic patient should prompt further testing rather than ruling out infection."
      },
      {
        "title": "Treatment and follow-up",
        "content": "Self-limited neonatal trichomonal infection acquired perinatally is not treated, since this generally resolves on its own. For postpubertal patients with confirmed infection, treatment follows current CDC guidelines, and sexual partners are treated simultaneously to prevent reinfection — the single biggest driver of ongoing transmission. Retesting is scheduled 3 months after treatment given the high reinfection rate, rather than assuming a single treatment course is sufficient. Mycoplasma genitalium and [[239|bacterial vaginosis]] are kept in mind as alternative or coexisting causes of persistent symptoms if a patient does not respond as expected to trichomoniasis treatment."
      }
    ]
  },
  {
    "article_id": 403,
    "article_title": "Urethritis",
    "sections": [
      {
        "title": "Evaluating dysuria with discharge or blood spotting",
        "content": "In a child with dysuria accompanied by urethral discharge or blood spotting on the underwear, urethritis is considered and a urethral smear and urine culture are obtained as part of the workup, since infectious causes—though less common in children than adults—still need to be identified when present. Trauma, chemical exposure (bubble baths, soaps), and the possibility of a foreign body are specifically asked about, since these are recognized noninfectious causes of urethritis in children. In a girl with dysuria and gross [[187|hematuria]] or blood spotting, careful examination is made for urethral prolapse (complete protrusion of urethral mucosa beyond the meatus), especially if she is young or from a lower socioeconomic background, and prompt treatment (sitz baths, antibiotics, topical estrogen, or surgical referral if needed) is given to avoid progression to mucosal necrosis. In a child with a weak urinary stream or recurrent urinary symptoms, urethral stricture is considered and voiding cystourethrogram or cystoscopy is pursued for diagnosis."
      },
      {
        "title": "Working up urinary retention and associated anatomic abnormalities",
        "content": "When evaluating acute urinary retention in an infant or child, consider severe acute cystitis, urethritis, meatitis (in boys), or vaginitis as the most common associated conditions, and check for severe constipation as a contributing cause. In a boy, examine specifically for urethral stricture or meatal stenosis with meatitis; suspect urethral valves if there is straining or dysuria without complete retention rather than full retention. In a girl with retention, do not attribute it to labial adhesions alone (even if severe), and consider an uncommon lesion such as a prolapsed ureterocele. For any child under 2, or any boy regardless of age, presenting with urinary tract symptoms, evaluate for a congenital anatomic abnormality such as [[271|vesicoureteral reflux]], since these are more prevalent in this population and affect long-term management and follow-up."
      }
    ]
  },
  {
    "article_id": 404,
    "article_title": "Vulvovaginitis",
    "sections": [
      {
        "title": "Evaluating a Prepubertal Girl with Vulvovaginal Symptoms",
        "content": "A detailed history is taken covering hygiene technique (front-to-back wiping), exposure to chemical irritants (bubble baths, soaps, detergents, pools/hot tubs), tight clothing, recent diarrhea, and perianal or nighttime itching, and the possibility of a foreign body is gently asked about, recognizing a young child may not recall or disclose this. On exam, visible discharge is distinguished from irritation/erythema alone - visible discharge raises the likelihood of a specific infectious cause to about 50%, whereas irritation without discharge more often reflects nonspecific vulvovaginitis from the combination of unestrogenized mucosa, absent labial protection, and alkaline pH that predisposes all prepubertal girls. A culture with sensitivities is obtained using a moistened cotton or urethral (Calgiswab) swab when a specific infectious cause is suspected, particularly with blood-tinged/serosanguineous discharge (raising concern for group A streptococcus or Shigella) or a history of recent respiratory illness or diarrhea. A diagnosis of nonspecific vaginitis is reserved for after other identifiable causes have been reasonably excluded, since many of these children have already had prior evaluations and treatment failures."
      },
      {
        "title": "Recognizing Red Flags and Treating by Cause",
        "content": "Any prepubertal child with a sexually transmitted pathogen identified on vulvovaginal culture, or with [[106|pelvic inflammatory disease]], is treated as a sexual abuse concern requiring a full evaluation - this association is close to universal at this age. Candida vulvovaginitis is considered only when a predisposing factor is present (diabetes, recent systemic antibiotics or steroids) in a prepubertal, diaper-free child, since Candida is otherwise an uncommon cause at this age despite being a frequent culprit in diaper dermatitis and in postpubertal vulvovaginitis; diagnosis is confirmed with KOH prep/wet mount and treated with topical azole antifungals or, in adolescents, a single dose of oral fluconazole. For nonspecific vulvovaginitis, the majority of cases, first-line management focuses entirely on hygiene counseling (front-to-back wiping, wet wipes, gentle genital cleansing, avoiding perfumed soaps and other irritants) before escalating to antimicrobial therapy, since most children improve with these measures alone."
      }
    ]
  }
]