病例　女 ,65岁。多饮、多尿、多食、体重减轻 1 0年。经血糖及胰岛素水平测定为 2型糖尿病 ,以后一直口服优降糖等药物治疗。一年前病人表现为双手活动拙笨 ,拿不住东西 ,继而出现双下肢舞动 ,睡眠中症状消失。一年来症状逐渐加重 ,但无智力低下 ,无二便障碍 ,病人无舞蹈病家 Case female, 65 years old. Drink more, more urine, more food, weight loss 10 years. Blood glucose and insulin levels were measured as type 2 diabetes, glyburide and other drugs have been oral since the drug treatment. A year ago, the patient showed clumsiness in his hands and could not hold anything. Then the lower limbs danced and the symptoms disappeared during sleep. Symptoms gradually increased over the year, but no mental retardation, no secondary obstacle, the patient without chorea