Drug eruption and skin reactions are moderate to severe adverse reactions to drugs used to treat certain health conditions. Most cases of drug eruption will disappear once the medicine is stopped. Common skin reactions can resemble other conditions, making them hard to successfully diagnose without a skin biopsy, blood test or immunological test. The most common types of eruptions are morbilliform, a breakout that looks like the measles, and erythematous rash. Treating these eruptions and reactions is as simple as taking the patient off the offending medication and switching them to an alternative medicine if needed. In more severe cases, hospitalization may be required to rid the body of the drug and treat any damage that may have occurred.