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Parkinson Disease — RACP Adult Medicine MCQ

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EasyNeurologyParkinson DiseaseRACP Adult Medicine

A 70-year-old man presents with asymmetric resting tremor of the right hand, cogwheel rigidity, and bradykinesia. Gait is shuffling with reduced arm swing on the right. Symptoms have been progressive over 18 months. What is the most likely diagnosis?

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Correct answer: E — Parkinson disease

Asymmetric resting tremor with cogwheel rigidity and bradykinesia is the classic triad of Parkinson disease. Unilateral onset with gradual progression and reduced arm swing are supportive features. Response to levodopa confirms the diagnosis. DaTSCAN can support diagnosis in uncertain cases.

Reference: MDS – 2024 – Parkinson Disease Diagnostic Criteria; eTG Neurology 2024