患儿男,4岁。因皮疹、腹痛、关节痛伴暗红色大便2d,于2003年2月24日下午在上臂三角肌处皮下注射乙型肝炎疫苗1支,夜间即出现皮肤发痒,双眼睑浮肿不能睁开,面部、双下肢及臀部可见红色斑丘疹,同时双膝关节、踝关节肿痛,不能走路,伴腹痛、呕吐2次。给予阿司咪唑、静脉注射10%的葡 Children male, 4 years old. Due to rash, abdominal pain, joint pain with dark red stool 2d, on the afternoon of February 24, 2003 in the upper arm deltoid muscle subcutaneous injection of hepatitis B vaccine 1, itchy skin at night, double eyelid edema can not open, face , Both lower extremities and buttocks visible red rash, while knees, ankle pain, can not walk, with abdominal pain, vomiting 2 times. Given astemizole, intravenous injection of 10% of Portuguese