1.特点(1) 大多数是后天致敏而引起的。(2) 药物过敏与病人过敏体质有关,半数病人对多种药物过敏。(3) 一般发生多次药物接触以后,少数发生于首次接触。有人青霉素过敏发生在首次,那可能他饮过注射过青霉素奶牛的牛奶,接触过注射过青霉素病 1. Features (1) most are caused by the sensitization. (2) drug allergy and the patient’s allergy related, half of the patients on a variety of drug allergies. (3) In the case of multiple drug exposure, a few occur in the first contact. Some people penicillin allergy occurred in the first time, that he may have been drinking penicillin milk cow, had been exposed to penicillin