Nevus sebaceous

Nevus sebaceus or sebaceous nevus (the first term is its Latin name, the second term is its name in English; also known as an "Organoid nevus" and "Nevus sebaceus of Jadassohn") is a congenital, hairless plaque that typically occurs on the face or scalp. Such nevi are present at birth, or early childhood, affecting males and females of all races equally. The condition is named for an overgrowth of sebaceous glands in the area of the nevus.