Congenital melanocytic nevi often have variations in color and must be checked carefully for change. This image displays a congenital nevus with a black area, which should be evaluated by a dermatologist due to the possibility of melanoma. A congenital nevus on the sole or palm often has a flat appearance and may be brown to almost black in color. Moles (nevi) present at birth, made up of nests of pigment-producing cells, are known as congenital melanocytic nevi. A congenital nevus is often quite large and dark brown, as in this child’s armpit area. Congenital melanocytic nevi often have hairs present. This image displays a close-up of a small congenital melanocytic nevus. Congenital nevi can have raised areas, as seen here. A congenital nevus is found in about 2% of newborns and is usually a raised, brown spot, as seen here on the nose. A congenital melanocytic nevus (birthmark) usually has sharply defined edges and an even brown color. This image displays a close-up of a congenital nevus that is uniformly black. This image displays color and darker pigment typical of a congenital melanocytic nevus. Congenital melanocytic nevi are present at birth.
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Birthmark (Congenital Melanocytic Nevus):
A parent's guide for infants and babies

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Picture of Birthmark (Congenital Melanocytic Nevus): Congenital melanocytic nevi often have variations in color and must be checked carefully for change. Divider line
Congenital melanocytic nevi often have variations in color and must be checked carefully for change.
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Who's At Risk
Most babies are born without moles but will gradually acquire them with age and sun exposure. Congenital, meaning "born with," moles are seen in about 1–2% of births. There is no racial or gender difference in occurrence.
Last Modified: 29 Jan 2008

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