[
  {
    "article_id": 384,
    "article_title": "Nocturnal Enuresis",
    "section_id": "e1028e16cc754d8ea340d7f5e049eadc",
    "section_title": "Taking the history and exam",
    "variant": "clinical",
    "imperatives": 2,
    "content": "Ask specifically about 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. Directly ask the family 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, check for hypertension or [[246|growth failure]] (chronic renal disease), and perform a genital exam for meatal stenosis or labial fusion, along with an abdominal exam for an enlarged bladder or kidneys. Send urinalysis and culture to exclude infection, and note urine specific gravity to screen for a concentrating defect. In a previously dry child with new-onset enuresis, consider abuse or a new emotional stressor as a possible trigger, and screen accordingly."
  },
  {
    "article_id": 385,
    "article_title": "Laryngomalacia",
    "section_id": "4b28950e8c7e4385ab0f1e1c9a597112",
    "section_title": "Diagnosing and Triaging the Infant with Stridor",
    "variant": "clinical",
    "imperatives": 3,
    "content": "Suspect laryngomalacia 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. Confirm with awake flexible fiberoptic laryngoscopy, looking for the omega-shaped epiglottis, short aryepiglottic folds, and inspiratory prolapse of the arytenoid mucosa/cuneiform cartilage. Obtain early airway examination (rather than waiting) 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, evaluate for dysphagia with a contrast swallow study or FEES, since laryngomalacia can impair suck-swallow-breath coordination. For infants with moderate to severe obstruction, proceed to complete bronchoscopy, since 15-60% have a synchronous airway anomaly that would otherwise be missed."
  },
  {
    "article_id": 385,
    "article_title": "Laryngomalacia",
    "section_id": "e89f5ae3972348529b2e809ced4f8f60",
    "section_title": "Managing the Expected Course and Recognizing Red Flags",
    "variant": "clinical",
    "imperatives": 1,
    "content": "Reassure families 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. Screen for and treat reflux, since GERD/laryngopharyngeal reflux can worsen severity and prolong the clinical course. Escalate to surgical evaluation (supraglottoplasty) 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, reassess for an alternate or coexisting diagnosis (such as an enlarging subglottic hemangioma, vocal cord paralysis, or subglottic stenosis) rather than continuing to attribute symptoms to uncomplicated laryngomalacia."
  },
  {
    "article_id": 386,
    "article_title": "Parasitic Infection",
    "section_id": "f340f79e114147bcb7788a213a573987",
    "section_title": "Deciding whom and how to test",
    "variant": "clinical",
    "imperatives": 1,
    "content": "Before ordering parasitic testing in a child with diarrhea, consider the pretest probability: more than 90% of stool O&P exams in the US are negative, and helminths are rarely the cause of diarrhea. Reserve broad parasitic workup 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, favor molecular (PCR-based) stool testing over traditional O&P microscopy, since these are now the more accurate and commonly used diagnostic approach for these organisms."
  },
  {
    "article_id": 386,
    "article_title": "Parasitic Infection",
    "section_id": "3acff6c343784f84b6ca98df03fa7df4",
    "section_title": "Recognizing and managing giardiasis specifically",
    "variant": "clinical",
    "imperatives": 1,
    "content": "Suspect giardiasis 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), focus exposure history on water sources, daycare, and person-to-person contact rather than the family dog or cat. When selecting antiparasitic treatment for any confirmed parasitic infection, verify FDA approval status and pediatric-specific indications 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",
    "section_id": "1e84d21ac02d4c9387502c8f07b6c0f0",
    "section_title": "Treating Metabolic Acidosis Safely",
    "variant": "clinical",
    "imperatives": 3,
    "content": "Direct treatment first at correcting the underlying cause - rehydration and treatment of the precipitating illness, rather than bicarbonate, resolves most cases. Correct fluid balance in infants with a dilutional component to their acidosis. For chronic acidosis from ongoing bicarbonate loss, add bicarbonate supplementation directly to feeds. Avoid reflexive intravenous sodium bicarbonate bolus for acute acidosis: reserve it 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. Counsel families 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": 387,
    "article_title": "Metabolic Acidosis",
    "section_id": "5405a368a9624d99ad929d0820395970",
    "section_title": "Working Up a Child with Metabolic Acidosis",
    "variant": "clinical",
    "imperatives": 2,
    "content": "Obtain BUN, creatinine, glucose, urinalysis, and electrolytes as baseline studies, and calculate the anion gap to narrow the differential. In an acutely ill child, consider diarrhea (stool bicarbonate loss), shock/lactic acidosis (assess perfusion carefully - dehydration, blood loss, sepsis, and heart disease can all present this way), and DKA (check glucose, urine ketones and glucose) as the most common acute causes. In a child with ketosis and only mild acidosis (bicarbonate above 18 mEq/L) attributed to poor intake, actively look for a concurrent illness such as gastroenteritis, since starvation ketosis alone rarely explains significant acidosis. Treat metabolic acidosis with seizures or depressed sensorium in an infant as a possible inborn error of metabolism until proven otherwise, checking for accompanying hypoglycemia or hyperammonemia, while considering meningitis/sepsis with lactic acidosis as 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, evaluate for renal insufficiency or renal tubular acidosis, including Fanconi syndrome-associated type II RTA (normoglycemia with glycosuria) and adrenal insufficiency (acidosis with hypoglycemia). Always ask about medication exposure and possible [[338|toxic ingestion]] (ethylene glycol, methanol), since these are treatable causes with excellent response to specific therapy when identified promptly."
  },
  {
    "article_id": 388,
    "article_title": "Phenylketonuria (Pku)",
    "section_id": "88b65950e89c43a59856007042c376ab",
    "section_title": "Ongoing management and special scenarios",
    "variant": "clinical",
    "imperatives": 1,
    "content": "Manage confirmed PKU 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. Support continued breastfeeding where desired, but monitor phenylalanine levels closely given ongoing intake from breast milk. Counsel patients and families to avoid aspartame. For a newborn of a mother with known PKU, measure phenylalanine levels once enteral feeding is established and consider early quantitative amino acid analysis 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",
    "section_id": "df36bd1819ae4e289b05eeca9100e744",
    "section_title": "Diagnosing NF1 in a Child",
    "variant": "clinical",
    "imperatives": 2,
    "content": "Apply the 2-of-7 criteria 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. Expect cafe-au-lait macules 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, do not dismiss NF1 - follow the child clinically, since about 95% eventually meet full diagnostic criteria (usually by 8-10 years of age). Refer to ophthalmology for slit-lamp exam and screening 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]]. When counseling families, evaluate both parents 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."
  },
  {
    "article_id": 389,
    "article_title": "Neurofibromatosis Type 1",
    "section_id": "ef116cbeacf44ce39c39e135f0ff37ec",
    "section_title": "Monitoring for Complications",
    "variant": "clinical",
    "imperatives": 1,
    "content": "Set expectations 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. Screen for and address [[114|learning disability]] actively, since it affects 30-60% of children with NF1 and is a major driver of quality of life, independent of physical manifestations. Watch for signs of vascular dysplasia (moyamoya arteriopathy, in 3-7% of children) if new neurologic symptoms develop, and remember that 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",
    "section_id": "b9abf72de27f49cfab8b4b87dbe5ce09",
    "section_title": "Diagnosing PCOS in the adolescent",
    "variant": "clinical",
    "imperatives": 1,
    "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), evaluate for both hyperandrogenism (clinical: hirsutism, moderate-to-severe acne, male-pattern alopecia; biochemical: elevated free/total testosterone, DHEA-S, androstenedione) and exclude other causes of irregular cycles (thyroid dysfunction, hyperprolactinemia) before diagnosing PCOS — do this evaluation before starting oral contraceptives for the irregular cycles, since starting hormonal therapy first can mask the underlying picture. Do not rely on pelvic ultrasound 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. Watch specifically for true virilization (clitoromegaly, voice change, rapidly progressive hirsutism) — this is not consistent with PCOS and should prompt evaluation for a more severe androgen-excess condition instead."
  },
  {
    "article_id": 391,
    "article_title": "Oligohydramnios",
    "section_id": "9e9d5a8799bf474c82bfb4319334ec29",
    "section_title": "Counseling and Coordinating Care",
    "variant": "clinical",
    "imperatives": 1,
    "content": "Because severe oligohydramnios from bilateral renal agenesis or severe renal dysplasia carries an extremely high mortality risk (respiratory insufficiency from pulmonary hypoplasia), coordinate antenatal counseling 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, screen for the broader pattern of associated anomalies (cardiac defects, GI atresias, imperforate anus, Pierre Robin sequence) rather than assuming an isolated renal or pulmonary problem. Screen for developmental dysplasia of the hip 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 refer to orthopedics if clinical instability (positive Barlow test) persists."
  },
  {
    "article_id": 392,
    "article_title": "Post-Concussion Syndrome",
    "section_id": "3d3b763cd611435da491ad477a43305a",
    "section_title": "Initial assessment after a head injury",
    "variant": "clinical",
    "imperatives": 3,
    "content": "Evaluate any child with a blow to the head, face, neck, or body 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. Remember that 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. Reserve laboratory workup (CBC, electrolytes, glucose, toxicology, coagulation studies) for significant [[139|head trauma]] or altered consciousness, rather than routine concussion presentations. Ask specifically about risk factors for prolonged recovery — female sex, [[308|migraine]] history, prior concussion, family/social stressors, a neurodevelopmental disorder, or psychiatric illness — since initial symptom burden combined with these factors helps anticipate which children are more likely to develop persistent postconcussion symptoms."
  },
  {
    "article_id": 392,
    "article_title": "Post-Concussion Syndrome",
    "section_id": "c568716d734d429e8d077ba3c2643044",
    "section_title": "Managing recovery and return to activity",
    "variant": "clinical",
    "imperatives": 3,
    "content": "Start with cognitive and physical rest, favoring a reduction rather than complete elimination of activity, and individualize the plan to the child's specific symptom spectrum. Use a stepwise, progressive return-to-activity program for both school and sport, advancing physical and cognitive demands gradually while monitoring for symptom recurrence at each stage — do not advance if symptoms return. Emphasize to athletes and families 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. Refer for formal neuropsychological or neurobehavioral testing 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, favor a more conservative eligibility decision for continued contact or collision sport participation."
  },
  {
    "article_id": 393,
    "article_title": "Peanut Allergy",
    "section_id": "f126142b9c5d4609b83c43106ff44cb8",
    "section_title": "Deciding When and How to Introduce Peanut",
    "variant": "clinical",
    "imperatives": 1,
    "content": "Stratify every infant by [[288|eczema]] severity and egg-allergy status before deciding on peanut introduction timing. For an infant with severe eczema, egg allergy, or both, strongly consider referral for peanut-specific IgE and/or skin prick testing (with an oral food challenge if results are indeterminate) before introducing peanut, aiming for introduction as early as 4-6 months once safety is established; interpret a skin prick wheal of 0-2 mm 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) - apply the same risk tiers to peanut-specific IgE using the 0.35 kUA/L cutoff. For an infant with mild-to-moderate eczema, introduce peanut-containing foods around 6 months without needing prior testing. For an infant with no eczema or known food allergy, introduce peanut-containing foods whenever age-appropriate, per family preference and cultural practice. Do not counsel families 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."
  },
  {
    "article_id": 393,
    "article_title": "Peanut Allergy",
    "section_id": "54930440f3cf4d70bd30840db87bd012",
    "section_title": "Managing a Reaction and Ongoing Care",
    "variant": "clinical",
    "imperatives": 2,
    "content": "Treat any presentation of rash, swelling, and wheezing after peanut exposure as [[143|anaphylaxis]]: give epinephrine promptly, along with antihistamines and systemic corticosteroids, and observe for a late-onset (biphasic) reaction before discharge. After stabilization, arrange a complete allergy evaluation and allergist referral for any child suspected of having peanut allergy - do not rely on history alone given the risk of both under- and overdiagnosis. Equip the family 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. Counsel 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",
    "section_id": "5605fffcf1d646cd9354ab368c10f974",
    "section_title": "Deciding when to evaluate",
    "variant": "clinical",
    "imperatives": 2,
    "content": "Apply the proactive evaluation thresholds rather than waiting until age 16: refer or begin workup 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. Evaluate promptly, 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, treat any positive menstrual-history screening question (absent menarche by 15, menarche not within 5 years of initial breast development) as a trigger for further endocrine and gynecologic evaluation, considering low energy availability alongside other causes."
  },
  {
    "article_id": 395,
    "article_title": "Short Bowel Syndrome",
    "section_id": "11addc9c02c3488ebbc99b8d7b58b6e2",
    "section_title": "Nutritional management and monitoring",
    "variant": "clinical",
    "imperatives": 1,
    "content": "Start total parenteral nutrition in the immediate postoperative period to meet caloric, fluid, and electrolyte needs while the bowel is insufficient, but introduce enteral feeding 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. Anticipate that recovery can take years, sometimes requiring TPN for the first several years of life, and involve a multidisciplinary short bowel program early, given the substantial survival benefit these programs and improved catheter/PNALD management have demonstrated (over 90% survival in recent series). Track the specific prognostic factors 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",
    "section_id": "cf991b066d864f5785585af8120ecb90",
    "section_title": "Identifying the Underlying Cause",
    "variant": "clinical",
    "imperatives": 1,
    "content": "In a tall, thin adolescent male presenting with sudden chest pain and dyspnea without trauma, consider primary spontaneous pneumothorax and ask about smoking, vaping, or drug use (marijuana, cocaine, MDMA), and consider CT imaging for apical blebs if recurrence or diagnostic uncertainty exists; also consider an underlying connective tissue disorder (Marfan syndrome, Ehlers-Danlos syndrome) 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, classify it as secondary spontaneous pneumothorax and address the underlying disease alongside the acute air leak. Consider iatrogenic causes (recent central line placement, intubation, biopsy, or mechanical ventilation) in any hospitalized child who develops sudden respiratory decline. In an adolescent female with recurrent spontaneous pneumothorax temporally linked to menstruation, consider the rare diagnosis of catamenial pneumothorax and refer appropriately, 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",
    "section_id": "261c6d1e99c84e3fa3da5dbc9bbbb93c",
    "section_title": "Initial stabilization and history-taking",
    "variant": "clinical",
    "imperatives": 1,
    "content": "Prioritize airway, breathing, circulation, and mental status assessment immediately in any child with suspected substance intoxication, before pursuing a detailed history or diagnostic workup. Once stabilized, gather a comprehensive history 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 — maintain a high index of suspicion regardless. Consider passive or environmental exposure (transplacental, breast milk, inhalation, or presence where drugs are used or manufactured) in an infant or young child with unexplained intoxication signs, and consider substance use or withdrawal in any adolescent with chronic, persistent irritability. Examine for pallor (hemolysis) or cyanosis (methemoglobinemia) as clues to specific toxic mechanisms, and evaluate for ataxia and metabolic derangement (hypoglycemia, [[170|hyponatremia]], hyperammonemia) alongside the standard exam."
  },
  {
    "article_id": 398,
    "article_title": "Polytrauma",
    "section_id": "8ba05693e1e34e48ba5967c98a2acf2e",
    "section_title": "In short",
    "variant": "short",
    "imperatives": 1,
    "content": "- Polytrauma is trauma to more than one area of the body, generally reserved for moderate-to-severe injury requiring multiple interventions across specialties (e.g., head plus orthopedic plus abdominal plus plastic surgery, including burns).\n- Trauma is the leading cause of morbidity and mortality in children in the developed world, and blunt trauma is the most common mechanism of injury in children.\n- Multisystem injury is the rule rather than the exception in children - internal injury must always be suspected when the mechanism warrants it, even without visible external trauma.\n- Children's unique anatomy increases vulnerability: a relatively larger cranium means more space between brain and skull, so bridging veins have less support, and thinner musculature/padding gives organs less protection.\n- Children have a remarkable capacity to maintain systolic blood pressure despite 25-30% acute blood loss, so normal blood pressure does not exclude significant hemorrhage; [[211|hypovolemic shock]] from acute blood loss is the most common cause of shock in pediatric trauma patients, and hemorrhagic shock is defined by cardiac output failing to meet tissue metabolic demand, not by any specific blood pressure number.\n- The ABCDE sequence (airway, breathing, circulation, disability, exposure) should be followed for initial assessment in every child with polytrauma; airway is the top priority since choking kills faster than any other threat, and the cervical spine should always be protected in a child with polytrauma.\n- Use length-based tools for rapid weight estimation to guide drug doses and equipment sizing in a child whose actual weight is unknown.\n- Persistent shock despite initial resuscitation should prompt consideration of neurogenic shock, cardiac contusion, or cardiac tamponade, not just ongoing hemorrhage.\n- Continuous monitoring after initial resuscitation is mandatory to detect further deterioration, and management should follow a multidisciplinary approach with a single team leader; a Pediatric Trauma Score below 0 is associated with a very poor prognosis and should prompt transport to the nearest appropriate facility.\n- Polytrauma can have significant psychological and social impact on the developing brain, contributing to considerable morbidity; psychological and social support during and after resuscitation is an important part of care. Improved emergency medical services, transport systems, and trauma facilities have significantly reduced trauma-related mortality in developed countries."
  },
  {
    "article_id": 398,
    "article_title": "Polytrauma",
    "section_id": "babf30bc86ae408981da6339f65f8db0",
    "section_title": "Initial Assessment of the Polytrauma Patient",
    "variant": "clinical",
    "imperatives": 1,
    "content": "Approach every child with polytrauma using the ABCDE sequence, prioritizing airway above all else, since airway compromise kills faster than any other injury - assess for obstruction from positioning, blood, teeth, vomitus, or foreign material, and evaluate level of consciousness, maxillofacial injury, and stridor or cyanosis. Protect the cervical spine throughout the assessment and stabilization process in every child with polytrauma, regardless of the apparent primary injury site. Use a length-based tool to estimate weight quickly for accurate drug dosing and equipment sizing rather than waiting for an actual weight. Actively suspect internal injury 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. Remember that 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 rely on other perfusion markers (heart rate, capillary refill, mental status) rather than blood pressure alone to assess for hemorrhagic shock."
  },
  {
    "article_id": 398,
    "article_title": "Polytrauma",
    "section_id": "74290fee4e8a4519998f2f8b624bb19c",
    "section_title": "Managing Shock and Coordinating Ongoing Care",
    "variant": "clinical",
    "imperatives": 1,
    "content": "If a child remains in shock despite adequate initial fluid/blood resuscitation, broaden the differential beyond ongoing hemorrhage to include neurogenic shock, cardiac contusion, and cardiac tamponade, and investigate accordingly rather than simply escalating volume resuscitation. Organize care under a single multidisciplinary team leader when multiple specialties (neurosurgery, orthopedics, general/trauma surgery, plastic surgery) are involved, and maintain continuous monitoring after initial resuscitation, since deterioration can occur even after apparent stabilization. Use the Pediatric Trauma Score to help gauge severity and, for very low scores, prioritize rapid transport to the nearest facility over transfer to a more specialized but more distant center. Build psychological and social support 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",
    "section_id": "3c50c7209a0643a1974d8983c8909015",
    "section_title": "Managing PUV and Its Renal Consequences",
    "variant": "clinical",
    "imperatives": 2,
    "content": "Arrange endoscopic fulguration of the valves as early as feasible once the diagnosis is confirmed; reserve cutaneous vesicostomy or another temporary diversion for very small infants in whom endoscopic treatment is not practical. Check renal function (creatinine, BUN) and electrolytes at diagnosis, and evaluate for vesicoureteral reflux, since about half of neonates with PUV have VUR - consider prophylactic antibiotics for higher-grade (3-5) reflux in infants and young children, weighing this against the risks of prolonged antibiotic exposure. Set expectations 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. Consider nephrectomy 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": 399,
    "article_title": "Posterior Urethral Valves",
    "section_id": "42fe89b771884ff3aedc12cb01f21b2b",
    "section_title": "Recognizing and Confirming PUV",
    "variant": "clinical",
    "imperatives": 2,
    "content": "Treat bilateral hydronephrosis in a male infant, whether identified prenatally or postnatally, 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, include PUV in the differential and obtain a voiding cystourethrogram, the key diagnostic study, looking for a dilated/elongated posterior urethra, thickened trabeculated bladder, bladder neck hypertrophy, and [[271|vesicoureteral reflux]]. Do not rely on parental report of a weak urinary stream to trigger evaluation, since most children with PUV are not brought in for this symptom specifically - maintain suspicion 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, consider previously unrecognized PUV as part of the work-up."
  },
  {
    "article_id": 400,
    "article_title": "Thrombocytopenia",
    "section_id": "bf69bd6e478448a7bf2b807310fe1aa3",
    "section_title": "Evaluating the well child with new bruising or petechiae",
    "variant": "clinical",
    "imperatives": 2,
    "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, obtain a CBC and peripheral smear: 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. Rule out pseudothrombocytopenia first if the count seems inconsistent with the clinical picture, by redrawing in a citrate or heparin tube rather than EDTA. Ask specifically about new medications (sulfonamides, vancomycin, valproic acid, phenytoin, carbamazepine, heparin) 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, broaden the workup (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."
  },
  {
    "article_id": 400,
    "article_title": "Thrombocytopenia",
    "section_id": "ab61ba55ca4b45c7bf8b6bd221b7c585",
    "section_title": "Managing ITP and counseling on risk",
    "variant": "clinical",
    "imperatives": 2,
    "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. Reserve active treatment (IVIG, corticosteroids, or other agents) for significant bleeding or very low platelet counts, and use platelet transfusion to manage an acute bleeding crisis. Counsel families that [[379|intracranial hemorrhage]], while the most serious complication, occurs in under 1% of ITP cases; still, educate on warning signs (severe headache, neurologic change) given the roughly one-third mortality when ICH does occur. In a menstruating adolescent with ITP, monitor closely for heavy menstrual bleeding if the platelet count falls below 10,000/µL. If thrombocytopenia persists beyond 3-6 months, pursue additional testing (HIV, hepatitis C, H. pylori, ANA, anticardiolipin antibodies) rather than continuing to assume self-limited acute ITP. In a newborn with thrombocytopenia, evaluate maternal history (preeclampsia, autoimmune disease, medications) alongside neonatal causes (alloimmunization, [[155|congenital infection]], sepsis, NEC), and consult hematology if thrombocytopenia persists beyond 10 days of life."
  },
  {
    "article_id": 401,
    "article_title": "Tinea Versicolor",
    "section_id": "0d025eec252e4245bbf1ed37a7487142",
    "section_title": "Recognizing tinea versicolor at the bedside",
    "variant": "clinical",
    "imperatives": 2,
    "content": "Suspect tinea versicolor 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, look instead for facial involvement, particularly the bilateral temples. Confirm 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. Distinguish 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; consider secondary syphilis in a sexually active adolescent with an atypical or resistant presentation."
  },
  {
    "article_id": 401,
    "article_title": "Tinea Versicolor",
    "section_id": "91923882960f47a9947c8f453225cc2b",
    "section_title": "Treatment and counseling on recurrence",
    "variant": "clinical",
    "imperatives": 2,
    "content": "Start with selenium sulfide 2.5% suspension or zinc pyrithione shampoo applied to the entire affected area (and surrounding skin) and left on overnight, repeating in 1 week and then monthly to prevent recurrence; warn the patient about potential skin irritation from this regimen. Alternatively, prescribe a topical antifungal cream twice daily for 1-2 weeks, or a single 400 mg dose of oral fluconazole for a simpler regimen in an adolescent or adult. Counsel 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 — reassure the patient this is expected and not treatment failure. Since Malassezia is normal skin flora and recurrence is common, advise on minimizing predisposing factors (excess heat, humidity, sweating, occlusive clothing) where practical."
  },
  {
    "article_id": 402,
    "article_title": "Trichomoniasis",
    "section_id": "b2663dd3e50348ca96126fb691178d9e",
    "section_title": "Treatment and follow-up",
    "variant": "clinical",
    "imperatives": 1,
    "content": "Do not treat self-limited neonatal trichomonal infection acquired perinatally, since this generally resolves on its own. For postpubertal patients with confirmed infection, treat per current CDC guidelines, and treat sexual partners simultaneously to prevent reinfection — the single biggest driver of ongoing transmission. Schedule retesting 3 months after treatment given the high reinfection rate, rather than assuming a single treatment course is sufficient. Keep Mycoplasma genitalium and [[239|bacterial vaginosis]] 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",
    "section_id": "9358b9457fd445fabf55a1615a625a58",
    "section_title": "Evaluating dysuria with discharge or blood spotting",
    "variant": "clinical",
    "imperatives": 1,
    "content": "In a child with dysuria accompanied by urethral discharge or blood spotting on the underwear, consider urethritis and obtain a urethral smear and urine culture as part of the workup, since infectious causes—though less common in children than adults—still need to be identified when present. Ask specifically about trauma, chemical exposure (bubble baths, soaps), and the possibility of a foreign body, since these are recognized noninfectious causes of urethritis in children. In a girl with dysuria and gross [[187|hematuria]] or blood spotting, examine carefully for urethral prolapse (complete protrusion of urethral mucosa beyond the meatus), especially if she is young or from a lower socioeconomic background, and treat promptly (sitz baths, antibiotics, topical estrogen, or surgical referral if needed) to avoid progression to mucosal necrosis. In a child with a weak urinary stream or recurrent urinary symptoms, consider urethral stricture and pursue voiding cystourethrogram or cystoscopy for diagnosis."
  },
  {
    "article_id": 404,
    "article_title": "Vulvovaginitis",
    "section_id": "2761d6433781411ab809bf2d712177c8",
    "section_title": "Evaluating a Prepubertal Girl with Vulvovaginal Symptoms",
    "variant": "clinical",
    "imperatives": 2,
    "content": "Take a detailed history 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 gently ask about the possibility of a foreign body, recognizing a young child may not recall or disclose this. On exam, distinguish visible discharge 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. Obtain a culture with sensitivities 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. Reserve a diagnosis of nonspecific vaginitis for after other identifiable causes have been reasonably excluded, since many of these children have already had prior evaluations and treatment failures."
  },
  {
    "article_id": 404,
    "article_title": "Vulvovaginitis",
    "section_id": "589877b8a98849a3858d99cd55734dde",
    "section_title": "Recognizing Red Flags and Treating by Cause",
    "variant": "clinical",
    "imperatives": 2,
    "content": "Treat any prepubertal child with a sexually transmitted pathogen identified on vulvovaginal culture, or with [[106|pelvic inflammatory disease]], as a sexual abuse concern requiring a full evaluation - this association is close to universal at this age. Consider Candida vulvovaginitis 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; confirm with KOH prep/wet mount and treat with topical azole antifungals or, in adolescents, a single dose of oral fluconazole. For nonspecific vulvovaginitis, the majority of cases, focus first-line management 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."
  }
]