患者男，42岁。因四肢发作性无力3个月入院。有白癜风病史，父亲亦患白癜风。自述全身乏力，以四肢最为明显，严重时变动体位都感困难，需由他人协助才能下床。偶有心跳加快，但无呼吸困难及复视。体格检查：双眼睑无下垂，甲状腺无明显肿大，心、肺听诊无异常发现，肝、脾未触 Male patient, 42 years old. Due to extremities attack weakness 3 months admitted to hospital. A history of vitiligo, my father also suffering from vitiligo. Read the body malaise to the most obvious limbs, severe changes in posture are difficult, need help by others to get out of bed. Occasional heart rate increased, but no breathing difficulties and diplopia. Physical examination: no eyelid ptosis, no significant enlargement of the thyroid, heart, lung auscultation no abnormalities found, liver, spleen not touched