Dermatology of the perianal region

Nosology by body topography is an essential exercise in dermatological clinical practice. Many diseases involve the perianal region which due to its characteristics, are difficult to approach in primary care practice or even for experienced specialists. This document aims to present a review of different mucocutaneous pathologies that can affect this anatomical area. An updated bibliographic review was conducted of the most frequently dermatological entities located this area. The results describe the most relevant characteristics of their etiology, morphology and treatment, grouping them by clinical and pathological patterns. In conclusion, we believe it is important to communicate knowledge about skin diseases affecting the perianal region, providing a tool for physicians and consequentl improving patient well-being.