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Parkinson's disease — DGM MCQ

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EasyMovement disordersParkinson's diseaseDGM

A 76-year-old man has slowness, smaller handwriting and reduced arm swing. Examination shows bradykinesia, rigidity and resting tremor on the right. Cognition is intact. Current medicines include amlodipine. What is the most likely diagnosis?

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Correct answer: A — Parkinson's disease

Bradykinesia with rigidity and asymmetric resting tremor is typical of Parkinson's disease. Essential tremor is action tremor without bradykinesia, cerebellar ataxia causes coordination signs, motor neurone disease causes weakness, and functional tremor has positive functional features. Bradykinesia is the key feature that separates Parkinsonism from isolated tremor.

Reference: NICE NG71