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Skin rashes can occur from a variety of factors, including infections, heat, allergens, immune system disorders and medications. One of the most common skin disorders that causes a rash is atopic dermatitis (ay-TOP-ik dur-muh-TIE-tis), also known as eczema.

Atopic dermatitis is an ongoing (chronic) condition that causes itchy, inflamed skin. Most often it appears as patches on the face, neck, trunk or limbs. It tends to flare up periodically and then subside for a time.

At-home interventions, such as avoiding harsher soaps and detergents or other irritants and applying creams or lotions, can lessen symptoms or reduce the risk of flare-ups. Medicated creams or ointments also can lessen symptoms.