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What's the Deal with Moles? Understanding Melanocytic Nevi
Published: Nov 04, 2023
Melanocytic nevi, commonly known as moles, are benign skin growths that can appear after birth. This article explores the types, characteristics, and potential concerns associated with these common skin lesions.
Types of Melanocytic Nevi
Melanocytic nevi are classified into different types based on their appearance and location. Common types include junctional, compound, and intradermal nevi, with junctional nevi being flat and compound nevi having both flat and raised areas. Intradermal nevi are typically skin-colored and may appear as small bumps.
Causes and Risk Factors
The development of nevi is influenced by genetic factors, sun exposure, and skin type. People with lighter skin tones or those exposed to the sun frequently are more likely to develop moles. Additionally, family history can play a role in the number and type of moles one may have.
When to Worry: Signs of Atypical Nevi
Atypical nevi, or dysplastic nevi, differ from regular moles in size, color, and shape. They may be larger than 5 mm, have irregular borders, and contain multiple colors. These features can increase the risk of melanoma, so monitoring changes in moles is crucial.
Frequently Asked Questions
They are benign skin growths, commonly known as moles.
They result from clusters of pigment-producing cells called melanocytes.
No, but atypical nevi may warrant closer observation.
Yes, sun exposure can increase the number and size of moles.
Key Takeaways
Understanding the different types and characteristics of moles can help identify potential skin concerns early.
References
- Frischhut N, Zelger B, Andre F, Zelger BG. The spectrum of melanocytic nevi and their clinical implications. J Dtsch Dermatol Ges 2022; 20:483.
- Orlow I, Satagopan JM, Berwick M, et al. Genetic factors associated with naevus count and dermoscopic patterns: preliminary results from the Study of Nevi in Children (SONIC). Br J Dermatol 2015; 172:1081.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic. Always discuss health information with your healthcare provider.
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