Allergic skin diseases belong to the most common dermatoses. This book deals with fundamental (in particular immunological aspects) as well as clinical symptoms and therapeutic strategies of the allergic skin diseases. Cells involved in the pathomechanisms of allergic skin disease are described in individual chapters. The allergic skin diseases which will be discussed are atopic dermatitis, being the chronic inflammatory skin disease with the highest prevalence, allergic contact dermatitis with special focus on contact dermatitis from cosmetics, being the most frequent cause of contact...