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

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.

Eczema can be a long-lasting (chronic) skin problem that requires more than one treatment. In infants, it usually affects the cheeks, the front of the knees, and the back of the elbows.