Which drug is being exhibited by a patient who develops hives after receiving an antibiotic?

Allergy -a drug-allergy is an adverse reaction resulting from an immunologic response following a previous sensitizing exposure to the drug. the reaction can range from a rash or hives to anaphylactic shock. tolerance to a drug means that the patient experiences a decreasing physiologic response to repeated administration of the drug in the same dosage. idiosyncrasy is an individuals unique hypersensitivity to a drug, food, or other substance; it appears to be genetically determined. synergism, is a drug interaction in which the sum of the drugs combined effects is greater than that of their separate effects.