Normal Moles (Nevus)

Moles, also known as nevi (plural) or nevus (singular), are common and benign growths that are present on nearly all people. Most develop during childhood, but some moles, known as congenital moles, can be present at birth. Moles can vary in size, but most are less than 5 mm or the size of an eraser on the end of a pencil. However, moles do tend to increase in size as a child grows. Color may depend on the natural pigmentation of an individual, but common colors include pink, flesh-colored, tan, or brown. Normal moles are uniformly colored, meaning that only one color is present throughout the mole, and uniformly shaped (round or oval). They tend to be soft and fleshy, in contrast to seborrheic keratoses, which are firm and rough feeling. However, certain types of moles are flat, similar to freckles. Moles are often present on sun-exposed areas of skin but can occur on skin with no sun exposure (for example, buttocks or groin).

Normal moles are benign, but moles have the potential over time to become cancerous (melanoma).  Congenital moles are at somewhat higher risk for becoming cancerous and should be carefully watched (see Check Your Skin). Any new mole that develops in adulthood, or any existing mole that changes in size, shape, or color, or becomes painful, itchy, develops a scab or bleeds should be evaluated by a dermatologist.

All photographs and diagrams are intended for informational purposes only and are not intended to be used for diagnosis. A dermatologist should be consulted for examination and diagnosis of skin lesions.

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