病史摘要男，3岁，91年8月以反复发热，四肢多关节肿痛2年余，双下肢对称性软瘫4天为主诉入院。患儿系足月顺产第7胎，生后一般状态良好。自7个月始经常发热，平均每月1次，每次持续3～5天，体温在38～39℃，伴一过性皮疹、多汗。曾反复用呼吸道感染，细菌性痢疾、胃肠炎、贫血 Summary of medical history Male, 3 years old, 91 years in August to repeatedly fever, limbs and joint swelling and pain more than 2 years, double symmetry of the lower limbs paralyzed for 4 days mainly for admission. Children with full-term 7th childbirth, general condition after birth. Frequent fever from the beginning of 7 months, an average of 1 per month, each for 3 to 5 days, body temperature 38 ~ 39 ℃, with a transient rash, sweating. Has repeatedly used respiratory tract infections, bacillary dysentery, gastroenteritis, anemia