🏥 USMLE Exam Prep

A 22-year-old man is brought to the emergency department after experiencing a sudden, brief episode of staring blankly, followed by automatisms like lip-smacking and fumbling with his clothes for about 2 minutes. He was confused for several minutes afterward and has no memory of the event. His medical history is unremarkable. What is the most likely type of seizure?

A Absence seizure
B Tonic-clonic seizure
C Focal onset impaired awareness seizure
D Myoclonic seizure

✓ Correct Answer: Option C

The patient's presentation with a sudden blank stare, automatisms, post-ictal confusion, and amnesia points to a focal onset impaired awareness seizure (formerly complex partial seizure). Absence seizures are brief with no post-ictal confusion, and tonic-clonic seizures involve full body convulsions.

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