Congenital Nevi

Childhood Skin Problems

pigmented hairy mole on the child's shoulder
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Congenital nevi are moles that are present at birth. These birthmarks have a slightly increased risk of becoming skin cancer depending on their size. Larger congenital nevi have a greater risk of developing skin cancer than do smaller congenital nevi. All congenital nevi should be examined by a health care provider and any change in the birthmark should be reported.

If a dermatologist believes a mole needs to be evaluated further or removed entirely, he or she will either remove the entire mole, or first take just a small tissue sample of the mole to examine thin sections of the tissue under a microscope (a biopsy). This is a simple procedure. (If the dermatologist thinks the mole might be cancerous, cutting through the mole will not cause the cancer to spread.) Read more about moles, freckles, and skin tags.

Slideshow: Slideshow: A Visual Guide to Birthmarks

Article: Skin Conditions: Moles, Freckles and Skin Tags
Article: Skin Conditions: Pigmented Birthmarks
Article: Birthmarks - Topic Overview

WebMD Image Collection Reviewed by Stephanie S. Gardner, MD on May 26, 2019



Image: Copyright © Bart's Medical Library / Phototake -- All rights reserved.

Text: "Skin Conditions: Pigmented Birthmarks", WebMD Medical Reference, "Skin Conditions: Moles, Freckles and Skin Tags", WebMD Medical Reference provided in collaboration with the Cleveland Clinic

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