Becker Nevus

**Semantic type:** Disease or Syndrome

**Definition:** A benign lesion that is sometimes congenital and consists of an overgrowth of the epidermis and the presence of melanin-containing cells. It is found mostly in males and typically develops during childhood or adolescence, becoming darker and more hairy after puberty.

**Synonyms:** - Becker's Nevus - Linear Papular Ectodermal-Mesodermal Hamartoma - Melanosis Neviformis - Pigmented Hairy Epidermal Nevus - Pigmented Hairy Nevus of Becker - Progressive Cribriform and Zosteriform Hyperpigmentation