ABPN Child Neurology common mistakes
ABPN Child Neurology · Understand the traps and how to avoid them.
Uses chronological age instead of corrected age to judge motor milestones in a preterm infant under 24 months, then labels delay or cerebral palsy when the corrected-age milestone is normal.
The stem supplies gestational age, but candidates anchor on the chronological age and forget that prematurity shifts milestone expectations.
What to do instead
Calculate corrected age by subtracting weeks of prematurity from chronological age, apply it to milestone interpretation until 24 months, and reserve concern for corrected-age delay, asymmetry, or regression.
Orders chromosomal microarray as the first-tier test for a recognizable single-gene malformation syndrome such as lissencephaly or Joubert syndrome, and then gives incomplete recurrence-risk counseling.
Candidates overapply the general rule that microarray is first-line for global developmental delay and do not switch to a phenotype-first genetics algorithm when the MRI or dysmorphology is specific.
What to do instead
Use the MRI pattern, dysmorphic features, and family history to choose targeted gene testing, a malformation panel, or exome sequencing; separately address X-linked, autosomal recessive, and parental mosaicism recurrence risks.
Diagnoses neonatal seizures from clinical movements alone, or dismisses electrographic seizures because the infant is sedated or pharmacologically paralyzed.
Neonatal seizures are often subtle and can be uncoupled from EEG, so candidates rely on observed bicycling, sucking, or autonomic changes instead of confirmatory video-EEG.
What to do instead
Obtain video-EEG for suspected neonatal seizures, treat electrographic seizures even when clinical signs are absent, and simultaneously evaluate for HIE, electrolyte disturbance, infection, and pyridoxine-responsive seizures.
Chooses an antiseizure medication before classifying the epilepsy syndrome, for example using ethosuximide for a child with juvenile myoclonic epilepsy who also has generalized tonic-clonic seizures.
Candidates memorize drug lists by seizure type but skip syndrome classification, so they miss age of onset, triggers, EEG pattern, and lifelong treatment implications.
What to do instead
Classify by seizure type, age of onset, EEG, and triggers before selecting therapy; recognize juvenile myoclonic epilepsy as a generalized syndrome requiring broad-spectrum therapy such as valproate when appropriate, and avoid drugs that may worsen myoclonus.
Attributes acute ascending areflexic weakness to Guillain-Barre syndrome but does not check negative inspiratory force or vital capacity, and fails to recognize autonomic instability.
The diagnostic label becomes the endpoint, so candidates focus on CSF and EMG findings rather than respiratory and autonomic monitoring.
What to do instead
Admit for serial forced vital capacity and negative inspiratory force monitoring, watch for autonomic instability, and treat with IVIG or plasma exchange while avoiding corticosteroids.
Dismisses sudden focal deficit or headache in a child as migraine and delays vascular imaging, missing arterial ischemic stroke or cerebral venous sinus thrombosis.
Pediatric stroke is rare and frequently mimics migraine, seizure, or encephalitis, so candidates underuse urgent MRI/MRA/MRV.
What to do instead
Treat sudden focal neurologic deficit as a stroke alert, obtain urgent MRI with vascular imaging, consider predisposing conditions such as arteriopathy, moyamoya, and venous sinus thrombosis, and recognize that thrombolysis is not routinely used in children.
Treats recurrent morning headache and vomiting as migraine without fundoscopy or imaging, missing raised intracranial pressure from a posterior fossa tumor.
Headache and vomiting are common pediatric complaints, and candidates anchor on migraine without screening for red flags such as morning predominance, worsening with Valsalva, or abnormal neurologic examination.
What to do instead
Perform fundoscopy and a full neurologic examination; obtain brain MRI when red flags, abnormal fundus, ataxia, or persistent vomiting are present, and avoid lumbar puncture before imaging when raised intracranial pressure is suspected.
Starts high-dose corticosteroids for suspected autoimmune encephalitis before lumbar puncture and HSV PCR, or labels a first demyelinating event as multiple sclerosis without serial evaluation.
Diagnostic urgency and pattern recognition push candidates toward treatment before excluding infection or confirming dissemination in time and space.
What to do instead
Obtain lumbar puncture and HSV PCR first, start empiric acyclovir promptly, send appropriate autoimmune and demyelinating antibodies, and diagnose multiple sclerosis only after serial clinical and MRI evidence of dissemination.
Misses an inherited metabolic crisis in a neonate with encephalopathy and acidosis by not ordering ammonia and lactate, and continues protein-containing feeds.
Metabolic disorders mimic sepsis and hypoxic-ischemic encephalopathy, so candidates complete a sepsis workup but omit the metabolic screen.
What to do instead
Order emergency ammonia, lactate, pyruvate, blood gas, glucose, and urine organic acids; stop protein intake, provide dextrose-containing fluids, and involve metabolic genetics early when hyperammonemia or anion-gap acidosis is present.
Clears a child with a concussion for same-day return to sport or school without a graded return plan, or fails to identify headache red flags that require imaging.
Candidates focus on the immediate diagnosis and miss the required stepwise return-to-learn and return-to-play process, or they over-image routine headache.
What to do instead
Use a gradual return-to-learn followed by return-to-sport protocol, counsel on symptom-limited activity, and reserve urgent imaging for red flags such as focal deficit, worsening headache, vomiting, seizures, or altered mental status.