男患 ,2 7岁。于 2 0 0 1年 5月 19日因胸前及四肢皮肤发红、瘙痒、起红色的疙瘩 ,于 18时 2 0分到急诊室就诊。查体 :病人一般状态好。胸前及四肢皮肤发红 ,皮肤局部有突起的球形斑疹 ,有搔痕。测血压和体温均正常。诊断为过敏性荨麻诊 ,给予维生素Ｃ ,扑尔敏口服抗过敏。但病 Male suffering, 2 7 years old. On May 19, 2001, the skin of the chest and extremities became red, itchy and reddish. At 180 hours, they were taken to the emergency room. Physical examination: the general state of the patient. Chest and extremities skin redness, the skin has a protruding local spherical rash, scratches. Blood pressure and body temperature were normal. Diagnosis of allergic nettle clinic, given vitamin C, chlorpheniramine oral anti-allergy. But sick