Atopic dermatitis, also known as eczema, occurs in all age groups, and it can have several different appearances. In children, the rash can be located on the inner aspects of the forearms or behind the knees as well as the face. In adults, the head, neck and hands are the most common areas of dermatitis. Atopic dermatitis tends to run in families. It can be associated with seasonal allergies such as hay fever, or asthma. This disease can be widespread and quite itchy. Treatments vary according to the severity of the skin rash. Topical moisturizers, cortisone creams, and ultraviolet light therapies can be helpful, as well as prescription medications.