What is a mole? A mole is a proliferation of cells called a nevus, which usually produce pigment. When such cells form a group, a swelling is formed in the skin and is effectively called a mole.   How is a mole formed? Any mole is often formed due to a hereditary component, meaning that regardless of what the person does – If he has a genetic predisposition to have moles on his body, he will develop moles. The second component is environmental and is related to the issue of exposure to sunlight.   Is a mole dangerous? A mole…