糖尿病是多种中枢性或周围性神经病变的一种主要危险因素。臂丛病作为糖尿病的并发症还未见报道,本文报道1例糖尿病酮症酸中毒(ＤＫＡ)并发臂丛病。患者为肥胖型女性,39岁,因头痛、呕吐2ｄ入院,随即出现精神错乱。患者既往有躁狂抑郁症,家族史中无神经肌肉疾病。入院后发现患者 Diabetes is a major risk factor for a variety of central or peripheral neuropathies. Brachial plexus as a complication of diabetes has not been reported, this article reports one case of diabetic ketoacidosis (DKA) with brachial plexus. The patient was obese and was 39 years old. She was hospitalized for 2 days because of a headache and vomiting, and then became mentally disturbed. Patients with previous manic depression, family history of neuromuscular diseases. Found after admission to patients