BODY
Caused by human papilloma virus, warts are an infection and can spread. Avoid walking barefoot in gyms' locker rooms and showers to prevent infection. Smaller warts of hands and feet can be treated with over-the-counter medicine; larger ones can be "freeze-burned" in office with liquid nitrogen. Men with beard area warts can have quick light burning called "electrodessication". To prevent chronic reinfection, razors should be kept in alcohol and changed frequently.