Atopic dermatitis, sometimes called eczema, is an inflammatory, recurring, non-contagious and very itchy skin disorder. It accounts for 20% of all dermatology visits. Patients with atopic dermatitis react to irritants, food, and allergens and their skin becomes red, flaky, itchy and easily infected. Atopic dermatitis has become increasingly common with sun avoidance and now affects almost 20% of children and 3% of adults in industrialized countries; its prevalence in the United States has tripled in the past thirty years. It is highly seasonal and usually improves after a summer holiday at the beach.