Dermatologic diagnoses in the perianal area.

Perianal dermatosis can encompass lesions from benign eczematous processes to advanced malignancies. It is important for the colorectal surgeon to be able to distinguish common problems from more serious pathology. This article covers nonsexually transmitted diseases occurring in the intergluteal fold and perianal region. These include inflammatory dermatoses, bacterial and fungal infections, and other disease processes.