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Moles, also known as nevi, are small, often pigmented skin growths that appear on most people at some point in their lives. They are caused by an accumulation of melanocytes, the cells responsible for producing the pigment melanin. Melanin gives the skin, hair and eyes their color. Moles can vary in size, shape and color and often appear as small, dark patches on the skin, although they can also appear flesh-colored or even pink.
Most moles are harmless and pose no health threat. However, they may be removed for aesthetic reasons or because they appear in areas that are irritated by clothing or jewelry. It is important to monitor the development of moles, as in rare cases a mole can develop into malignant melanoma, a form of skin cancer. Changes in size, shape, color or the appearance of symptoms such as itching, bleeding or inflammation should be examined by a dermatologist for early detection and treatment of skin cancer.
Birthmarks can be present at birth (congenital nevi) or develop over the course of a lifetime. Their formation is influenced by genetic factors and sun exposure. People with fair skin tend to develop more moles, especially if they spend a lot of time in the sun, which increases the risk of skin cancer. It is therefore advisable to check moles regularly and take protective measures against excessive sun exposure.
