What is a systemic rash?

A systemic rash is a type of skin eruption or lesion that is caused by an internal medical condition, such as an infection, an allergic reaction, or an autoimmune disorder. It can involve widespread areas of the body and may be accompanied by other symptoms, such as fever, fatigue, and joint pain. Systemic rashes are often a sign of an underlying medical issue and may require medical evaluation to determine the cause and receive appropriate treatment. Some examples of systemic rashes include measles, scarlet fever, and drug-induced rashes.