An allergic reaction to a drug can happen to anyone, but there are some risk factors that may add to your chances of having a drug allergy:
- Having one or more other allergies
- Taking a drug that is of the same class or is otherwise similar to one that caused a previous allergic reaction
- Having another health condition that weakens your immune system
- Having a previous, even if mild, allergic reaction to the same drug
Medically Reviewed by: Stephanie Burkhead, MPH
Published: Aug 25, 2010
Published By: Healthline Networks, Inc.