A Case of Type 2 Diabetes Mellitus Manifested by Hemichorea

Hemichorea associated with hyperglycemia is very rare disease. Furthermore, hemichorea as the initial manifestation of diabetic mellitus is extremely rare. We here report the case of new-onset hemichorea as first manifestation of type 2 diabetes mellitus. A 82-year old male without previously diagnosed diabetes mellitus, had visited at outpatients department of neurology because of dyskinesia at left side for 3 days. At initial studies, high signal basal ganglia lesion on the T1-weighted brain Magnetic Resonance Imaging and non-ketotic hyperglycemia were noted. Hemichorea had not improved by haloperidol monotherapy but by glycemic control. After insulin therapy, patient’s capillary blood sugar was controlled and hemichorea disappeared without anticonvulsants therapyope