Genital and anal warts are caused by a viral infection called the human papilloma virus, or HPV. The virus is transmitted by skin-to-skin contact with an infected person. There my be no symptoms but when they appear, they can include small bumpy warts around the cock, balls and arse. The warts can be removed by a medical practitioner. Recurrences can happen and treatment sometimes requires several visits to the doctor. The body’s immune system will clear the virus over time.