Warts are a very common skin condition. They frequently appear as single lesions or in small groups. This is a photograph of an unusually severe and extensive case of warts. (Image courtesy of the Centers for Disease Control and Prevention.)

Warts may occur on any area of the body. These are typical looking warts on the face.

Warts are small, usually painless growths on the skin caused by a virus. The typical wart is a raised round or oval growth on the skin with a rough surface. Common warts tend to cause no discomfort unless they are in areas of repeated friction or pressure. Warts often go away on their own within two years.

Plantar warts are found on the soles of the feet. Because of their location, they can become extremely painful. Large numbers of plantar warts on the foot may cause difficulty when running and even walking.

Subungual warts appear under and around the fingernails. These warts are similar to the common wart but are much more difficult to cure than warts found elsewhere on the body.

A common wart. A circular bandage.

This person has a wart (verruca) that has built up a cutaneous horn which is made up of hard keratin. This does not slough-off like normal skin cells.