Differential Diagnosis in Dermatology 

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.