Abstract
A 59-year-old woman presented with a 10-day history of involuntary movements of the right body. She initially complained of continuous, irregularly timed, and unpredictable movements of her right hand that ultimately spread to her entire right upper limb, sometimes having an abrupt violent character (video, segment 1, on the Neurology ® Web site at [www.neurology.org][1]). She had poorly controlled type 2 diabetes.1 Her neurologic examination revealed slight right facial weakness and right hemichorea-hemiballismus. Blood glucose was at 31 mmol/L with no ketone bodies in the urine. Brain imaging revealed spontaneous high signal of the left caudate nucleus and putamen (figure). She received insulin and neuroleptics (risperidone) with rapid improvement (video, segment 2). [1]: http://www.neurology.org
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