Common warts are grainy skin growths that occur most often on your fingers or hands, and they are coarse to touch. They also often feature a pattern of little black dots, which are small, clotted blood vessels. Warts are viral and can spread by touch. They are flesh-colored, white, pink, or tan, and can be caused by HPV. Most forms sit on top of the skin; however, there are plantar warts which are below the surface of the skin, on the feet and are very painful.
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A cyst is a closed sac having a distinct membrane and division linked with nearby tissue. It is a cluster of cells grouped to form a sac, which may contain air, fluids, or semi-solid material. Cysts contain dead skin cells that build up and can become infected. If a cyst fails to heal, it may have to be removed surgically.