Movement Disorders USMLE Step 1 Practice Question
A 34-year-old woman presents with increasingly frequent brief, shock-like jerking movements of her trunk and upper extremities lasting less than one second. She developed acute hepatic failure two weeks ago following mushroom poisoning. Vital signs: BP 128/82, HR 92, RR 18, Temp 37.2°C, SpO2 98%. Laboratory studies reveal elevated ammonia at 95 μmol/L and prolonged prothrombin time. Neurologic examination shows no focal deficits. She denies recent seizures. Which of the following is the most likely diagnosis?
Answer choices
- AMyoclonusCorrect answer
- BAthetosis
- CHemiballismus
- DChorea
- EDystonia
- FAsterixis
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