What is a nevus?

A nevus, commonly known as a mole, is classified as a malformation of the skin. It typically appears as a benign growth that can vary in color, shape, and size. Nevi are composed of clusters of melanocytes, the cells responsible for producing pigment in the skin. While most nevi are harmless, they can vary significantly, and some may change over time or be mistakenly viewed as precursors to skin conditions. Understanding that a nevus is a skin malformation helps distinguish it from other conditions like acne, tumors, or infections, which are fundamentally different in terms of their formation, appearance, and implications for skin health.