Movement Disorders USMLE Step 1 Practice Question
A 67-year-old man with a 3-year history of progressive resting tremor, rigidity, and bradykinesia presents with emotional withdrawal and micrographia. His wife notes difficulty initiating daily activities. Vital signs: BP 138/82, HR 88, RR 16, Temp 98.6°F, SpO2 98%. MRI brain shows no striatal atrophy. He denies memory loss and takes no antiparkinsonian medications. Serum B12 and TSH are normal. Which of the following is the most likely diagnosis?
Answer choices
- AEssential tremor
- BMultiple system atrophy
- CHuntington disease
- DParkinson diseaseCorrect answer
- EAlzheimer disease
- FProgressive supranuclear palsy
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