A or '''melanocytic naevus''' is a small, dark spot on the skin. It can be either subdermal (composed of
Melanin ), or a
Pigmented growth on the
Skin , formed mostly of
Melanocytes . The high concentration of
Melanin is responsible for their dark color. They are a member of the family of
Skin Lesion s known as
Naevi .
Moles may either be present at birth or develop later in life.
Acquired moles are a form of
Benign Neoplasm , while
Congenital Moles are considered a minor malformation, or
Hamartoma . Moles are most often of no medical consequence, but since they are permanent, removal may be performed for cosmetic or other reasons.
Moles are usually circular or oval and not very large. Most children are born with moles, and almost everyone has at least one or two moles on their bodies. Large amounts can be concentrated on the back, the chest and arms.
The number of moles on a person's body appears to be hereditary. This applies also to their color and shape.
According to some people, moles may enhance or detract from beauty. The number and location of moles generally determines their effect on beauty. A large mole on the tip of the nose would likely be considered to detract from beauty, while a small mole on the cheek or near the lips may appear quite attractive. Attractive moles on the face are usually referred to as
Beauty Mark s.
Note that while the removal of a skin mole for cosmetic enhancement can be performed, scar tissue is unavoidable;
Keloid scarring can also occur, which often leaves a scar that is equally noticeable as the original skin mole.
Sudden and unexpected changes in skin moles (e.g. bleeding, irritation, darkening, sudden growth or change in shape) can be a sign of
Skin Cancer , so monitoring for these factors is advised. If a mole appears suspicious, it can be
Biopsied and checked for signs of
Malignancy . Skin moles that appear to be suspect may be removed preemptively, which is usually performed using a local anaesthetic.
