多发性肌炎系一组主要累及骨髂肌的自身免疫性疾病,伴有周围神经损害者,又可称为神经肌炎(neuromyositis),以往认为临床少见。本文报告4例我科近年收治的较典型病例,并就其临床及电生理所见结合文献予以讨论。 Polymyositis is a group of autoimmune diseases mainly involving the bony iliac muscle, with peripheral nerve damage, also known as neuromyositis (neuromyositis), in the past that clinical rare. This article reports 4 cases of our department in recent years admitted to the more typical cases, and its clinical and electrophysiological findings combined with the literature to be discussed.