病例1,患者,男性,42岁,汉族,已婚,河北省无极县人,农民,主因进行性四肢无力4个月于97年10月8日急诊入院。患者于4个月前无明显诱因出现四肢无力,不能干重体力活,能够从事一般体力劳动,不伴有肌肉疼痛,无发热,未在意,未治疗。两个月前出现手指和脚趾麻木,到当地医院就诊,考虑“末梢神经炎”,给予“B_1”、“B_(12)”等药治疗,麻木无好转,肢体无力却进一步加重,不能干体力活,但能维持日常生 Case 1, the patient, male, 42 years old, Han nationality, married, Promise County, Hebei Province, peasants, mainly due to progressive limb weakness for 4 months in October 8, 1997 emergency admission. In 4 months before the patient had no obvious incentive to limb weakness, can not dry hard physical activity, able to engage in general manual labor, without muscle pain, no fever, did not care, untreated. Two months ago numbness of the fingers and toes, to the local hospital for treatment, consider “peripheral neuritis”, given “B_1”, “B_ (12)” and other drug treatment, numbness did not improve, limb weakness is further aggravated, , But can maintain daily life