临床上肌内注射常会出现晕针晕厥反应 ,但在注射青霉素时出现晕针晕厥反应 ,常会误诊为青霉素过敏休克。因此 ,如何鉴别注射晕厥和过敏性休克的反应非常重要。笔者在临床工作中已遇到多例注射晕厥患者 ,被误认为过敏性休克 ,经认真鉴别 ,判断为因注射引起的晕厥 ,而给一般处理 Clinically intramuscular injection often appear fainting fainting reaction, but in the injection of penicillin fainting needle reaction, often misdiagnosed as penicillin anaphylactic shock. Therefore, how to identify the reaction of injected syncope and anaphylactic shock is very important. I have encountered in clinical work more cases of patients with syncope, was mistaken for anaphylactic shock, after careful identification, judging by the injection caused by syncope, and to the general treatment