Description

Moles, or nevi, are common growths that form when pigment-producing cells (melanocytes) cluster together in the skin. Most people have several moles, and while the vast majority are completely harmless, regular skin checks help catch the rare mole that shows early signs of skin cancer.

Causes

A benign cluster of melanocytes; sun exposure and genetics both influence how many moles a person develops over their lifetime.

Prevention

Daily sun protection can reduce the number of new moles that form and lowers the risk of any mole becoming atypical over time.

Treatment Options

Most moles need no treatment beyond routine monitoring. Concerning moles are removed via a simple in-office biopsy or excision.

Myths vs. Facts

Myth: All moles are dangerous and should be removed. Fact: The overwhelming majority of moles are completely benign; removal is only needed for cosmetic reasons or when a mole shows worrying changes.

When to See a Dermatologist

For an annual skin check, or sooner if you notice a mole changing in size, shape, color, or border (the "ABCDE" warning signs).

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