A mole, technically known as a melanocytic naevus, is a small, dark spot on human
skin. According to the American Academy of Dermatology, the majority of moles appear during the first two decades of a person’s life while about one in every 100 babies are born with moles. Acquired moles are a form of
benign neoplasm, while
congenital moles are considered a minor
malformation, or
hamartoma. A mole can be either subdermal (composed of
melanin), or a pigmented growth on the
skin, formed mostly of a type of
cell known as
melanocytes. The high concentration of the body’s pigmenting agent,
melanin, is responsible for their dark
color. Moles are a member of the family of
skin lesions known as
naevi.
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