过敏性休克是由特异性过敏原作用于组织固定抗体所引起的全身性速发性过敏反应。其特点:①发作快,在接触过敏原后几秒钟或数分钟,多在30分钟内出现反应,②反应重,病变涉及多个系统和很多脏器及组织,如心血管、呼吸及消化系统等,病情严重者,可在1～2分钟内死亡,本症的发生率约占正常人群的0.08‰,占全部门诊病人的2～4‰。 Anaphylactic shock is a systemic hypersensitivity reaction caused by the action of specific allergens on tissue-fixed antibodies. Its characteristics: ① Attack fast, in a few seconds or minutes after exposure to allergens, more reactions within 30 minutes, ② heavy reaction, lesions involving multiple systems and many organs and tissues, such as cardiovascular, respiratory and digestion System, etc., in serious condition, can die in 1 to 2 minutes, the incidence of this disease accounts for about 0.08 ‰ of the normal population, accounting for all out-patient 2 to 4 ‰.