皮肌炎是一种以侵犯横纹肌为主,常伴有特征性皮疹并可累及多个脏器的炎性肌病,细胞及体液免疫反应异常是其发生发展的中心环节。以往认为皮肌炎很少累及肾脏,其肾脏损害主要为因横纹肌溶解后肌红蛋白损伤肾小管而出现急性肾功能损伤及各种慢性肾脏损伤。近年来,我国仅报道数十例有肾脏损害的皮肌炎病例[1-4],国外大组和个案报道也不多见[5-7]。为了解皮肌炎的肾脏损害情况,本研究收集我院皮肤科收治并确诊皮肌炎患者的临床资料,分析其肾脏损 Dermatomyositis is a kind of inflamed striated muscle, often accompanied by a characteristic rash and can affect multiple organs of inflammatory myopathy, abnormal cellular and humoral immune response is the occurrence and development of the central link. In the past that dermatomyositis rarely involving the kidneys, kidney damage mainly due to myoglobin damage after rhabdomyolysis and renal tubular injury and a variety of chronic kidney injury. In recent years, only dozens of cases of dermatomyositis with kidney damage have been reported in China [1-4], while large groups of foreign countries and cases reported are rare [5-7]. In order to understand the situation of kidney damage of dermatomyositis, this study collected the clinical data of dermatology patients admitted and diagnosed with dermatomyositis in our hospital, analyzed its renal damage