AOBNP Neurology & Psychiatry common mistakes
AOBNP Neurology & Psychiatry · Understand the traps and how to avoid them.
Committing to a single diagnosis for a patient with mixed neurological and psychiatric findings instead of carrying two working diagnoses and stating which features each explains.
Trainees are conditioned to produce one unifying answer; combined presentations (e.g., seizures plus psychosis, or cognitive decline plus depression) tempt premature closure on whichever domain the examiner's opening question seems to signal.
What to do instead
Before answering, write the problem list and explicitly assign each feature to a candidate diagnosis; state remaining unexplained features aloud and name the second diagnosis that covers them.
Localizing a lesion by naming a diagnosis (e.g., 'stroke') rather than by neuroaxis level and side.
Pattern recognition shortcuts replace the systematic rostrocaudal localization drill under time pressure, and candidates assume the examiner wants the disease name.
What to do instead
Answer in a fixed order: level (cortex, subcortex, brainstem, cord, root, plexus, nerve, NMJ, muscle), side, and tempo; give the differential only after localization is stated.
Describing a mental status exam in adjectives ('alert and oriented, appropriate') without documenting the specific domains tested and the observed abnormalities.
Candidates memorize a screening phrase and treat the MSE as a formality, so they omit attention, thought process, thought content, insight, and judgment when these are the discriminating findings.
What to do instead
Use a fixed MSE checklist (appearance, behavior, speech, mood, affect, thought process, thought content, perception, cognition, insight/judgment) and report a concrete observation for each domain.
Failing to screen for and quantify suicide risk, substance use, and medical mimics before presenting a psychiatric formulation.
The urgency to demonstrate diagnostic knowledge pulls candidates straight to the primary psychiatric diagnosis, and safety screening feels like a checklist item rather than the basis for disposition.
What to do instead
Build a standing 'safety and mimics' paragraph into every psychiatry presentation: risk assessment with protective factors, substance history, and the medical workup that would change management.
Reading the mental status exam and history as independent of the neurological exam instead of integrating them into one formulation.
Curricula teach neurology and psychiatry as separate blocks, so candidates present two parallel summaries and never reconcile contradictory findings.
What to do instead
End every presentation with an integrated formulation that names which findings are neurological, which are psychiatric, and how they interact (e.g., delirium, seizure-related psychosis, functional overlay).
Naming a first-line drug without stating dose, titration, monitoring parameters, and contraindications.
Candidates study drug names and mechanisms but not prescribing logistics, and exam pressure favors the shortest acceptable answer.
What to do instead
For every pharmacologic answer, rehearse a four-part template: starting dose and titration, target dose, required monitoring (labs, ECG, levels), and key contraindications or interactions.
Misclassifying a movement disorder or seizure semiology by relying on a single feature rather than the full phenomenology.
Overlap between tremor types, dystonia, and psychogenic movements, and between convulsive syncope and epileptic seizures, rewards superficial pattern matching.
What to do instead
Describe phenomenology first (frequency, amplitude, distractibility, suppressibility, activation maneuvers, postictal state, video/EEG correlation) and let the classification follow from the description.
Applying DSM or diagnostic criteria without first excluding medical, substance, and medication causes, and without documenting duration and functional impairment.
Criteria lists are easier to recall than the exclusion logic, and candidates assume the vignette has already excluded medical causes.
What to do instead
State the differential of medical and substance causes explicitly, name the tests that exclude them, and cite the duration and impairment criteria in the answer.
Ignoring the emergency or disposition question when the case includes red flags such as new focal deficit, altered consciousness, or suicidal ideation.
Candidates focus on diagnostic accuracy and treat management and level of care as an afterthought, so they answer the 'what is it' and skip the 'what do you do now'.
What to do instead
Close every case with a management paragraph covering immediate stabilization, level of care, and the specific next step (imaging, LP, admission, hold), regardless of diagnostic certainty.
Presenting findings in the order they were collected rather than in a structured, prioritized format, burying the key abnormality.
Oral and written case presentations reward completeness, and candidates fear omitting data more than they fear disorganization.
What to do instead
Rehearse a fixed presentation skeleton (chief complaint, pertinent history, exam, formulation, differential, plan) and lead each section with the finding that changes management.