Rash, Age 11 and Younger

Healthy skin is a barrier between the inside of the body and the outside environment. A rash means some change has affected the skin. A rash is generally a minor problem or is part of an illness that will go away on its own. A rash may be caused by contact with a substance outside the body, such as poison ivy (contact dermatitis), or by other, more serious illnesses, such as measles or scarlet fever (strep throat with rash).