Movement Disorders USMLE Step 1 Practice Question
A 61-year-old woman with bipolar disorder treated with haloperidol for 8 years presents with involuntary repetitive lip smacking, tongue protrusion, and choreiform facial movements persisting despite recent dose reduction. Vital signs: BP 128/76, HR 82, RR 16, Temp 37°C, SpO2 98%. MRI brain shows no structural abnormalities. Serum copper and ceruloplasmin levels are normal. She denies recent medication changes. Which of the following is the most likely diagnosis?
Answer choices
- ATardive dyskinesiaCorrect answer
- BAcute dystonia
- CEssential tremor
- DAkathisia
- EWilson disease
- FHuntington disease
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