本文作者报道一例重症肌无力(MG)病人,在大剂量注射皮质类固醇出现急性肌病表现的病例。女,13岁,从1991年7月起,相继出现肢体无力、言语不清和吞咽困难。作腾喜龙试验阳性、血清乙酰胆硷受体升高。按MG给子吡啶斯的明治疗后,症状缓解。9月中旬起每日加用强的松龙45mg口服,8天后病情加重出现呼吸麻痹,行气管插管呼吸机辅助呼吸。病人在人工辅助呼吸期间先后两次出现双 The authors report a case of myasthenia gravis (MG) presenting with acute myopathy in high-dose corticosteroids. Female, 13 years old, from July 1991 onwards, have appeared physically weak, ill-defined and swallowing difficulties. Teng Xi Long test positive, serum acetylcholine receptor increased. According to the MG to sub-pyridostigmine treatment, the symptoms relieved. From mid-September every day plus prednisolone 45mg orally, 8 days later aggravate respiratory paralysis, endotracheal intubation ventilator-assisted breathing. The patient doubled twice during artificial assisted breathing