Eczema, also called atopic dermatitis, is a skin problem. It causes dry skin, intense itching, and a raised rash. Sometimes the rash develops blisters and crusts. It is often scaly.

In lighter skin, the rash may look pink or red. In darker skin, the rash may be hard to see or it may look dark brown, gray, or purple. Or there may be patches of lighter skin.

The cause of atopic dermatitis isn't clear. But most people have a family history of allergies, asthma, or eczema. It's not contagious. You can't catch it from others. Moisturizers and prescription creams often help.