Fully updated and revised, Differential Diagnosis in Dermatology, Fourth Edition has been greatly expanded and now includes entirely new chapters on specific areas such as mouth, tongue, lip and ear problems, acute erythematous rashes of the trunk and limbs, chronic erythematous rashes and lesions, and non-erythematous lesions. It also now includes an invaluable classification of topical steroids by potency. Chapters are divided into different body areas, and possible diagnosis can be made by reading through the text or looking through the photographs. It is a highly effective guide to dermatological diagnosis in the surgery or clinic, taking the reader through the process of diagnosing skin disease, from the basic biology of skin, history taking, describing skin lesions and carrying out special investigations. With well over 750 illustrations, this full-colour book combines excellent clinical photography with practical text and clear diagrams throughout.