Recurrent hemichorea with different etiologies in one patient.

Hemichorea is a unilateral movement disorder caused by acute ischemic or hemorrhagic stroke of contralateral cerebral lesions. It is followed by hyperglycemia, and other systemic diseases. Several cases of recurrent hemichorea associated with the same etiology have been reported, but cases with different etiologies have rarely been reported. We report a case in which the patient experienced both strokes and post-stroke-related hyperglycemic hemichorea. Magnetic resonance imaging of the brain appeared different in these two episodes. Our case demonstrates the importance of evaluating every patient presented with recurrent hemichorea carefully, as the disorder may be caused by different conditions.