多发性肌炎和皮肌炎是主要累及四肢近端肌群,以肌无力、肌痛和肌萎缩为主的疾病。同时有皮肤损害者称皮肌炎。首发症状与病程不同,易延误诊治。为此,我们对我院45例住院确诊的病人,对比观察了病理、肌电、自身抗体、酶学实验室检查,试图达到早诊治的目的。 Polymyositis and dermatomyositis are diseases mainly involving the proximal muscles of the extremities, mainly muscle weakness, myalgia and muscle atrophy. At the same time there are skin lesions called dermatomyositis. The first symptom and course of disease is different, easy to delay diagnosis and treatment. To this end, we 45 cases of hospitalized patients diagnosed in our hospital, compared the pathology, myoelectricity, autoantibodies, enzymatic laboratory tests, trying to achieve the purpose of early diagnosis and treatment.