Drug Reactions Drug reactions can be classified to: Morbilliform (Measles like) most common Urticarial (hives) second most common Fixed drug Photo sensitivity Hypersensitivity Vasculitis Severe reactions including Stevens Johnsons Syndrome Morbilliform: Most common drug reaction It is type IV hypersensitivity reaction It starts 1-2 weeks after drug ingestion-sooner if reused in the future It causes …
