This article includes supplementary video clips, available online at

jws-mds.20795.mpg13757K Segment 1.Taken on arrival to the neurology clinic and shows the phenomenology of bilateral Holmes' tremor. Irregular-amplitude coarse hand tremors were noted at different phases of motion. Segment 2.Taken in the ward 18 hours later and shows total resolution of tremor with glycemic control. This video presentation has been abbreviated. The full version will appear on theMovementDisorders DVD Supplement, which is issued bi-annually.

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