wrinkles & freckles
moles
actinic keratosis
skin cancer

Moles are called nevi (singular is nevus). The number of nevi can increase throughout life, influenced by genetics and sun exposure. A changing mole could be sign of melanoma. The criteria for clinical suspicion: ABCD, A for "asymmetry," B for "border irregularity," C for "color variation, D for "diameter greater than six millimeters." Melanoma often arises from normal skin, not necessarily from a pre-existing mole. Removal of moles for solely cosmetic purposes must be undertaken judiciously, as the scar from removal might not be preferable.