Definition

Warts are small, benign (harmless) growths caused by a viral infection. They occur on the skin or the mucous membrane. The mucous membrane is tissue that lines the nose, throat, digestive tract, and other body openings. The viruses that cause warts are members of the human papilloma virus (HPV) family. Warts can be transmitted from one person to another and they can travel from one part of the body to another.

Description

Warts occur most commonly among children, young adults, and women. They are a problem for 7 to 10 percent of the population. Warts are caused by nearly sixty different kinds of HPV. Each type prefers a certain part of the body. For example, some types of HPV produce warts on the skin, others cause warts inside the mouth, and still others produce warts on the genital and rectal areas.

Viruses enter the body through the skin or...