There are many kinds of drugs, and allergy symptoms are not the same, first stop re-intake of drugs that cause allergies, if oral, certainly can not continue to take; if it is used externally, to immediately wash off the skin of the drug; if the infusion, the infusion must be replaced with a saline that will not be allergic, but can not pull the needle, because the needle left to facilitate the use of drugs for resuscitation. Two situations require resuscitation: 1. Anaphylactic shock, common with penicillin, characterized by sudden dizziness, cold sweat, pale face, and sometimes even direct coma. The first is to use epinephrine in the muscle, the injection site is not very picky, the outer thigh is most convenient, and then use hormones. 2, throat edema, characterized by a large rash, itching, soon appearing mucous membrane edema of the mouth and lips, like sausage mouth, immediately feel tight throat, breathing difficulties, this must be used as soon as possible hormones, while using drugs to transfer the patient to the rescue room or monitoring, just in case.