What is a nevus?

So, what is a nevus? The nevus is a birthmark, and in a more scientific explanation, it is a benign formation on the surface of the skin or even the mucous membrane. There is a nevus due to the release at one point of a large amount of pigment, which degenerates into melanocytes. Over time, the nevus can change shape, color. They are convex and flat, large and small, often on larger moles grow thicker and darker hair.

The nevus can degenerate into a malignant tumor, so do not subject them to mechanical attack, pull, rub, tear and warm. The nevus can also be removed by surgery.