The aura associated with migraine is a neurologic warning that a migraine is going to occur. Of the following, the LEAST common type of typical auras is

Correct Answer: D

Rationale: Migraine auras include visual (C, most common, ~90%), sensory , and dysphasic types. Vertigo and distortion are rarer, with vertigo least frequent (~10%) per studies, often tied to vestibular migraine. Visual dominance makes D the correct answer.

Correct Answer: D

Rationale: Krabbe disease presents with irritability, hyperpyrexia, vomiting, and feeding issufrom galactocerebrosidase deficiency, causing myelin loss. Tay-Sachs , Sandhoff , and GM2 gangliosidosis show regression and seizures; metachromatic leukodystrophy later ataxia. Krabbearly signs make D the correct answer.

Correct Answer: A

Rationale: Alternating hemiplegia mimics stroke but shows normal imaging, per diagnostic criteria, as its channelopathy-based. Metabolic errors , hypertensive , hypoglycemia , and HIE often reveal abnormaliti(e.g., edema). Normalcy in A makes itthe correct answer.

Correct Answer: D

Rationale: Normal neonatal CSF leukocyte counts can reach 30/mm³ , per studi(e.g., Pediatrics), higher than adults due to immature barriers. Lower counts (A-C) underestimate this; 30 is the accepted upper limit. This physiologic norm makes D the correct answer.

Correct Answer: C

Rationale: Hearing loss is the most common sequela of bacterial meningitis (~10-30%), per CDC, from cochlear damage (e.g., pneumococcus). Seizur, language delay , cognition , and vision are less frequent. Hearings vulnerability makes C the correct answer.