Dermatology Questions? Ask an Online Dermatologist.
I am Dr.Amita and I would be assisting you with your concern today.
I understand that you had to wait for a long time to get an answer but unfortunately this is not under an experts control.
Genital warts can form at top of buttocks though this is not a common area to get warts.
A biopsy would be the best way to confirm that these indeed are warts.