There are various types of lesions or abnormalities of the skin. Two of the most common lesions are moles and skin tags. A mole is a flat spot or raised lump on the skin. They vary in size and are usually darker than the skin although they can be pink colored. Moles are more common in lighter skinned people and typically have a hereditary basis.
Many birth marks are flat moles.
Fortunately, most moles are benign and harmless. Occasionally, however, one can become cancerous. Excessive sun exposure or a history of skin cancer in your family increases your risk of getting skin cancer. You should check all your moles periodically. A change in color, or if it has an uneven color or pigmentation.