Warts are more likely to spread to other places on the same individual rather than to someone else. The exception is genital warts, which are highly contagious and are spread through sexual contact. Babies may contract the warts from their mothers during birth. Warts can sometimes be frustratingly difficult to get rid of, but surprisingly over half of them disappear spontaneously within about two years. Unfortunately, treated warts sometimes reappear just as spontaneously.
Venereal warts are the exception.
They do not clear up without medical treatment. Cause Various strains of the human papillomavirus cause warts. Once the virus enters the skin through a small break, it causes the skin cells in the immediate area to multiply rapidly. The result is the fibrous lump of tissue that pushes up out of the skin's surface. Incidence Warts are common in children, especially teenagers, and millions of people seek treatment for them each year.