What causes atopic dermatitis?
Things that may make atopic dermatitis worse include:
What are the symptoms?
Atopic dermatitis starts with dry skin that is often very itchy. Scratching causes the dry skin to become red and irritated (inflamed). Infection often occurs. Tiny bumps that look like little blisters may appear and ooze fluid or crust over. These symptoms-dryness, itchiness, scratching, and inflammation-may come and go. Over time, a recurring rash can lead to tough and thickened skin.
Mild atopic dermatitis affects a small area of skin, isn't very itchy, and usually goes away with moisturizer. Severe atopic dermatitis covers a large area of skin that is very itchy and doesn't go away with moisturizer.
People tend to get the rash on certain parts of the body, depending on their age. Common sites for babies include the scalp and face (especially on the cheeks), the front of the knees, and the back of the elbows. In children, common areas include the neck, wrists, legs, ankles, the creases of elbows or knees, and between the buttocks. In adults, the rash often appears in the creases of the elbows or knees and on the nape of the neck.
How is atopic dermatitis diagnosed?
A doctor can usually tell if you have atopic dermatitis by doing a physical exam and asking questions about your past health.