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Parkinson disease — RCPSC IM MCQ

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HardNeurologyParkinson diseaseRCPSC IM

A 66-year-old man has progressive right-hand rest tremor, small handwriting and slowness over 18 months. Examination shows asymmetric bradykinesia, cogwheel rigidity and reduced right arm swing. Eye movements are normal and there are no early falls or autonomic failure. What is the most likely diagnosis?

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Correct answer: A — Idiopathic Parkinson disease

Asymmetric bradykinesia with rest tremor, rigidity and gradual progression supports idiopathic Parkinson disease. Absence of early falls, vertical gaze palsy and prominent autonomic failure makes atypical parkinsonism less likely.

Reference: Canadian Guideline for Parkinson Disease