Becker nevus, also known as Becker melanosis, is a benign congenital epidermal nevus that has a notable distribution and onset of presentation. The characteristic hyperpigmentation and hypertrichosis ...

A congenital nevus is a mole that you’re born with. These moles can be large or small, have hair growing out of them, or change over time. Congenital nevus (or nevi) is the medical term for a mole ...