Genital warts and human papillomavirus (hpv) infection
External genital warts are caused by human papillo- mavirus, usually type 6 or 11; other types (16, 18 and others) cause dys-plasia and neoplasia of the cervix, anus and genital skin. No form of HPV-specific treatment has been shown to eradicate the virus or to modify the risk of cervical dysplasia or cancer, and no single treatment is uniformly effective in removing warts or preventing recurrence.