Atopic dermatitis is a chronic skin condition resulting in persistent itching with inflammation of the outer lying layers of the skin. It is common in those with an allergic constitution and is often seen in conjunction with conditions like hay fever (allergic rhinitis) and asthma. Atopic dermatitis is commonly known as eczema, particularly infantile eczema when it occurs in children. However eczema describes a wide range of inflammatory conditions and is synonymous with the term dermatitis.