They frequently appear as single lesions or in small groups. This is a photograph of an unusually severe and extensive case of warts. Warts may occur on any area of the body. These are typical looking warts on the face. These common warts are situated around the fingernails and may grow under the fingernail.
Periungual warts are difficult to treat.
Warts are caused by a viral infection. Plantar warts are commonly seen on the heel and ball of the foot and multiple warts may be present. A callous thickens around the wart and walking may become painful. This is a relatively large plantar wart. Note the black spots which are often seen in warts.