Moles develop when cells called Melanocytes produce Melanin, which is the natural pigment found in the body that is responsible for determining skin, hair, and eye colour. Usually, these cells disperse evenly throughout the skin. Occasionally, however, these cells grow together in a mass and a mole develops.
Moles can grow anywhere on the skin either singularly or grouped together. They appear brown or black and it is normal to have between 10 to 40 on your skin.
Moles start to appear during childhood with additional moles continuing to develop into a person’s 30’s, after which they begin to slow down. Moles can change slowly with age; they may change color, become raised, sprout hair, or even disappear altogether. Pregnancy, puberty, and sun exposure can affect moles, causing them to become darker.