多发性肌炎(PM)并发肾小管酸中毒(RTA)临床较少见,我科收治一例报告如下。患者女,37岁。5年前始现两足肌肉疼痛,逐渐波及四肢及腰部肌肉。四肢无力,并烦渴、多饮、多尿、食欲差。3年前摔倒致左股骨颈及股骨干骨折。3月来不能行走,翻身困难,于1988年11 Polymyositis (PM) associated with renal tubular acidosis (RTA) is relatively rare clinical, our department admitted a case report as follows. Female patient, 37 years old. Two-legged muscle pain began to develop 5 years ago and gradually spread to the extremities and lumbar muscles. Limbs weakness, and polydipsia, polydipsia, polyuria, poor appetite. Three years ago fell to the left femoral neck and femoral shaft fracture. March can not walk, turn difficult, in 1988 11