1　临床资料患者 ,5 0岁 ,因“四肢肌无力 1个月 ,双侧上眼睑水肿半月”入院。患者入院前 1个月自觉四肢无力 ,抬臂、下蹲等活动困难 ,近半月以来双眼上睑水肿 ,肌无力逐渐加重 ,但无发热、咳嗽、吞咽困难、关节疼痛等症。到本院门诊求治 ,查肌酸磷酸激酶 (ＣＰＫ)、乳酸脱氢酶 1 clinical data patients, 50 years old, due to “limb weakness 1 month, bilateral eyelid edema on a half month” admission. One month before admission, patients with conscious limbs weakness, lifting arm, squatting and other activities difficult, nearly half a month since the upper eyelid edema, muscle weakness gradually increased, but no fever, cough, difficulty swallowing, joint pain embolism. To our hospital for treatment, check creatine phosphokinase (CPK), lactate dehydrogenase