药物过敏反应的机制,一般认为是由抗原与抗体结合,而发生的变态反应。药物常被认为是一种半抗原。但除药物本身外、与机体一些有关因素如生理、病理条件、不同家族的人等也不无关系。因此,其机制还有待进一步实验研究。药物过敏反应的表现是繁杂多样的。主要有:(1)过敏性休克反应 青霉素发生的过敏性休克是多见的。链霉素,普鲁卡因药物产生过敏性休克也屡见报道。破伤风等异体血清、糜蛋白酶等酶类 The mechanism of drug allergy, is generally considered to be the antigen and antibody binding, and the occurrence of allergic reactions. Drugs are often considered a hapten. However, in addition to the drug itself, and the body of some relevant factors such as physiology, pathological conditions, different family members are not unrelated. Therefore, its mechanism remains to be further experimental study. The performance of drug allergy is complex and diverse. There are: (1) anaphylactic shock response to allergic shock of penicillin is more common. Streptomycin, procaine drugs are also frequently reported anaphylactic shock. Tetanus and other allogeneic serum, chymotrypsin and other enzymes