Teaching Video NeuroImage: "Weighing" in on an Unusual Tremor

A 73-year-old right-handed man with hypertension, hypercholesterolemia, renal insufficiency, and cyclothymic disorder presented with 1 year of insidious onset tremor in his right hand when carrying his briefcase. Psychotropic drugs included bupropion and lamotrigine. He was neurologically intact except for a very low amplitude bilateral kinetic tremor (L > R) and a much larger amplitude right hand task-specific tremor (video 1) characterized by EMG (figure).

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