Most people infected with human papillomavirus (HPV) do not know they are infected because the virus itself does not cause symptoms.

With certain forms of HPV, genital warts (single or multiple growths or bumps that appear in the genital area) may develop. Genital warts usually appear as soft, moist, pink or flesh-colored swellings. They can be raised or flat, single or multiple, small or large and sometimes appear in clusters that resemble the shape of cauliflower. Genital warts can appear within weeks or months of being infected with HPV. Genital warts are not usually accompanied by other symptoms. However, when additional symptoms appear, they may include itching, pain and the warts may appear crumbly (friable).

In women, genital warts can grow inside and around the outside of the vagina, on the vulva (opening to the vagina), cervix, groin and in or around the anus.

In men, genital warts can grow on the penis, scrotum, thigh, and groin, or in or around the anus. While very rare, genital warts can grow in the mouth or throat of a person who has had oral sex with an HPV-infected person.