Top scientific authors contribute their expertise and put a wealth of complex information into perspective in Skin Immune System: Cutaneous Immunology & Clinical Immunodermatology, Third Edition. This edition provides an overview of the skin immune system (SIS), a totally updated section on immunodermatological diseases, and six new chapters. Part I presents historical and comparative information on immunodermatology and includes a new chapter on the immunogenetics of inflammatory skin disease, while Part II covers the cellular elements of SIS and highlights newly defined functional subclasses of cells. Part III describes the humoral elements of SIS and provides two new chapters which focus on defensins and cathelicidins, and on the chemokines of human skin. Part IV discusses how the cellular and humoral elements of SIS interact under different circumstances and includes a new chapter on signal transduction pathways in cutaneous immunology. Part V focuses on dermatological diseases with a significant immunological background with a new chapter on the immunology of cutaneous drug eruptions, followed by Part VI on immunotherapy in dermatology, which features a new chapter reflecting the recent wave of products from biotechnology. Since the publication of the previous editions, a great deal of significant information has become available in almost all areas of cutaneous immunology and clinical immunodermatology. This progress has now been reflected in a completely updated and expanded resource.