1　临床资料患儿刘ＸＸ ,男 ,4岁 ,新化化溪人。因发热、乏力3ｄ ,皮疹、硬肿伴右腿疼痛 2ｄ ,神志改变 ,气促 3ｈ于2 0 0 0年 6月 18日下午 5时急诊抱送入院。患儿 3ｄ前无明显诱因出现发热 ,体温是高达到 4 0℃ ,伴轻咳 ,乏力 ,昨中午发现背部出现红色风团样皮疹 ,瘙痒感 ,逐 1 clinical data in children Liu XX, male, 4 years old, Xinhua Chemical Creek. Due to fever, fatigue 3d, rash, sclerosis with right leg pain 2d, change of mind, shortness of breath 3h on June 18, 2000 at 5 o’clock emergency admission to hospital. Children with no obvious incentive before 3d appeared fever, body temperature is as high as 40 ℃, with light cough, fatigue, noon yesterday found red wind-like rash on the back, itching flu, by