Anaphylaxis, the most severe drug allergy reaction, is a medical emergency that requires an immediate visit to the hospital or, if you were previously aware of the danger, a self-injection of epinephrine to help open your airways and increase your blood pressure.
the Healthline Editorial Team
Medically Reviewed by:
Stephanie Burkhead, MPH
Aug 25, 2010
Published By: Healthline Networks, Inc.