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When people talk about moles, they are usually referring to a variety of skin growths, including true moles ¡ª which are also called nevi ¡ª freckles and other growths. However, in dermatology, a mole is a very specific type of skin growth that looks a certain way under a microscope.

Ahead, I¡¯ll share more facts you might not know about moles, including how to tell if they are healthy.