重症肌无力征为一神经肌肉接头处的自身免疫缺陷疾病,临床表现为重复运动后肌肉无力和疲劳。本病一般不影响肌肉本身,但有些作者已经注意到少数病人出现肌肉萎缩,但对其肌肉病变性质存在分歧。为了探讨这一现象,我们对32例重症肌无力征病人进行了临床、肌电图研究。32例病人中,全身型26例、眼型6例。男21例,女11例。20岁以下者5 Myasthenia gravis signifies an autoimmune deficiency disorder at the neuromuscular junction, with clinical manifestations of muscle weakness and fatigue after repetitive exercises. The disease generally does not affect the muscle itself, but some authors have noticed a small number of patients with muscle atrophy, but there are differences in the nature of their muscle lesions. To explore this phenomenon, we conducted a clinical, EMG study of 32 patients with myasthenia gravis. Of the 32 patients, 26 were systemic and 6 were ocular. There were 21 males and 11 females. Under 20 5