There are more than 60 types of HPV.
Some types of the virus are transmitted by nonsexual personal contact and cause common skin warts. Several types of HPV are spread by sex and primarily infect the genitals or anal area. Of the sexually transmitted types, some cause cancer and pre-cancerous changes of the cervix, anus, or the skin of the penis or female genitals.
Other types cause warts of the genitals or anal area. Genital warts are the most common symptoms of HPV infection. However, most HPV infections do not lead to either warts or cancer; most infections go away by themselves, without causing any symptoms.
