张某,男,1.5岁,主因双下肢无力6天,全瘫2天入院。患儿于入院前8天皮肤出现圆形红斑,因痒搔抓后加重。次日发烧,食欲差,偶有呕吐。2天后双下肢无力,站立不稳,渐加重至完全不能活动。伴有大便秘结,小便只在哭闹用力时滴出。当地医院曾查脑脊液,发现有陈旧红细胞,白细胞68,蛋白500mg％。给予补液、青链霉素治疗,不见好转而转来我院。既往无重要疾病史,发育史无异常。查体:体温37℃,发育正常,营养稍差,皮肤淋巴腺无异常,心肺阴性,肝在剑突下1.5cm。神经系统:神志清,颅神经及两上肢未见异常。两 Zhang, male, 1.5 years old, mainly due to weakness in both lower extremities 6 days, paralyzed 2 days admitted. Children with circular erythema appeared 8 days before admission due to itchy scratching increased. The next day a fever, poor appetite, occasional vomiting. Two days later both lower extremities weakness, standing firm, gradually heavier to completely unable to move. Accompanied by constipation, urination only drops hard when crying hard. The local hospital had checked cerebrospinal fluid and found that there are old red blood cells, white blood cells 68, 500mg protein. Give rehydration, penicillin treatment, no improvement but transferred to our hospital. No past history of important diseases, history of development was normal. Physical examination: body temperature 37 ℃, normal development, slightly less nutritious, no abnormality of the skin lymph gland, cardiopulmonary negative, the liver in the xiphoid 1.5cm. Nervous system: conscious, cranial nerves and two upper limbs without exception. Two