【单选题】【消耗次数：1】
过敏反应是指
①
药物引起的反应与个体体质有关，与用药剂量无关
②
等量药物引起和一般病人相似但强度更高的药理效应或毒性
③
用药一段时间后，病人对药物产生精神上依赖，中断用药，出现主观不适
④
长期用药，需逐渐增加剂量，才可能保持药效不减
⑤
长期用药，产生生理上依赖，停药后出现戒断症状
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