以多脑神经损害为首发症状的糖尿病临床罕见，容易误诊误治，现报道如下。1病历摘要患者，男性，72岁。因左眼睑下垂伴眼球不能运动4周，于1994年4月14日由外院转入我院。此次发病无明显诱因，无限痛，现朦等，发病后第2天往外院，按多脑神经炎（左侧Ⅲ、Ⅳ、Ⅵ脑神经）处理， With multiple brain damage as the first symptom of diabetes is clinically rare, easy misdiagnosis and mistreatment, are reported below. 1 patient summary of patients, male, 72 years old. Due to the left eyelid ptosis with the eye can not exercise for 4 weeks, on April 14, 1994 from the hospital transferred to our hospital. The incidence of no obvious incentive, unlimited pain, is dim, etc., the day after the onset of outpatient, according to multiple neuritis (left Ⅲ, Ⅳ, Ⅵ cranial nerve) treatment,