患儿女，27天，足月顺产，新法接生，母乳喂养。患儿因发热、流涕、咳嗽，周身起皮疹5天，以上呼吸道感染、过敏性皮疹入我院。入院前曾口服安比先、退热药，无效。体检：神志清，体温37.5℃，脉搏110次／分。发育正常，营养良好。周身皮肤散在大小不等的暗红色丘疹，以面部、 Children with children, 27 days, full-term delivery, the new law delivery, breastfeeding. Children with fever, runny nose, cough, whole body rash for 5 days, more than respiratory infections, allergic skin rash into our hospital. Antibiotics have been ineffective since oral administration prior to admission. Physical examination: conscious mind, body temperature 37.5 ℃, pulse 110 beats / min. Normal development, good nutrition. Whole body scattered in the skin of varying sizes of dark red papules to the face,