%0 Case Reports %T Diabetic Hemichorea-hemiballism after Prompt Improvement in Hyperglycemia. %A Kitagawa M %A Yamanaka Y %A Adachi T %A Ito J %A Fukase K %A Ohta I %A Katagiri T %J Intern Med %V 56 %N 22 %D Nov 2017 15 %M 28943546 %F 1.282 %R 10.2169/internalmedicine.8615-16 %X We herein report a case of hemichorea-hemiballism in an 85-year-old man diagnosed with diabetes at 76 years of age. After a one-year interruption in treatment, he was treated with a low-calorie diet, linagliptin, and nateglinide. Over 51 days, his HbA1c level decreased from 15.8% to 7.7%. After a prompt improvement in his hyperglycemia, he began experiencing involuntary movements in the right upper and lower extremities. T1-weighted magnetic resonance imaging showed a high signal intensity in the left lens nucleus. The patient was diagnosed with diabetic hemichorea-hemiballism and received haloperidol (1 mg/day) as treatment.