Warts are skin growths that are caused by the human papillomavirus (HPV). There are more than 60 kinds of HPV, some of which tend to cause warts on the skin. HPV stimulates quick growth of cells on the skin’s outer layer. In most cases, common warts appear on the fingers, near the fingernails, or on the hands.
Sometimes, warts appear on other parts of the body. Some types of HPV cause the following different kinds of warts:
This type of wart usually appears as flesh-colored or light brown lumps that are flecked with small clotted blood vessels that appear as tiny black dots. Plantar warts appear on the soles of the feet.
This condition is one of the most common kinds of sexually transmitted diseases. Genital warts can appear in the pubic area, on the genitals, in the anus, and/or in the vagina.
This type of wart is more common in teens and children than in adults. Flat warts are smoother and smaller than other warts, and they generally occur on the face. Flat warts also can appear on the legs, especially among females.