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jws-mds.20497.mpg13688K Segment 1. A 47-year-old woman's prominent bradykinesia and rigidity are shown. There is no tremor. Her most rigid facial expression is not particularly "mask-like," and ocular movements are normal. She has prominent action-induced twitches of her fingers, suggestive of cortical myoclonus. Segment 2. The patient's dyskinesia is observed after the administration of Sinemet 100/25 totalling 1,500 mg of L-dopa daily. Segment 3. Two weeks later after pallidal surgery for deep brain stimulation implantation and still takingL -dopa medication, her mobility and general well-being are greatly improved. No other medications were taken during this period. This video presentation has been abbreviated. The full version will appear on theMovementDisorders DVD Supplement, which is issued bi-annually.

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