History and physical examination are adequate for diagnosing many skin lesions. Some require biopsy or other testing.
Important information to obtain from history includes
A negative history is as important as a positive history. The history of the particular skin lesions is also important, including time and site of initial appearance, spread, change in appearance, and triggering factors.
Visual inspection is the central evaluation tool; many skin disorders are diagnosed by the characteristic appearance or morphology of the lesions.
Last full review/revision March 2013 by Robert J. MacNeal, MD