Mole

Overview of Mole

Moles can form anywhere on the skin. They are localized areas of increased pigmentation. Moles can occur at birth or may develop during childhood and adolescence. Moles may undergo changes during pregnancy and puberty. They may also change shape or size if they become cancerous.

Causes of Mole

Moles form from overproduction of pigmented skin cells called melanocytes.

Signs and Symptoms of Mole

Most frequently moles are flat or elevated areas of skin which have increased pigmentation. They vary in color from light brown to dark brown. Generally, they range in size but are usually less than 1 inch in diameter. Dysplastic nevi may run in families. They are somewhat larger than the typical mole and may have uneven distribution of the pigment. These dysplastic nevi are somewhat more likely to form cancerous lesions. Blue nevi have a bluish or black color. They usually occur on the face, arms, legs and buttocks. They should be distinguished from melanomas. If there is a change in the size, shape or growth of a mole it should be evaluated by a physician.

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Medical Content Last Updated on 07/12/2008

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Mole

Overview of Mole

Causes of Mole

Signs and Symptoms of Mole

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