drug eruption

n.
  1. An eruption caused by ingestion, injection, inhalation, or insertion of a drug, often a result of allergic sensitization.dermatitis medicamentosa dermatosis medicamentosa drug rash
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.