Illustration copyright 2000 by Nucleus Communications, Inc. All rights reserved. http://www.nucleusinc.com

Atopic dermatitis is a long-lasting (chronic) skin condition that causes intense itching and then a red, raised rash. In severe cases, the rash develops clear fluid-filled blisters. In infants, it usually affects the cheeks, the front of the knees, and the back of the elbows.

Atopic dermatitis is often called eczema or atopic eczema.