Some strains of HPV cause genital warts but just because you have HPV does not mean you have genital warts. There's over 100 strains of HPV. Numbers 6, 11, 42, 43, 44, 55 may cause genital warts (6 and 11 cause something like 90% of genital warts). 16, 18, 31, 33, 35, 39, 45, 51, 56, 58, 59...