RecruitingBiological interventionHuman Papillomavirus (HPV) Vaccination vs. Placebo for the Treatment of Refractory Cutaneous WartsThis double-blinded clinical trial randomly assigns participants with refractory cutaneous warts to receive either treatment with the human papillomavirus (HPV) vaccine or a placebo to assess the efficacy of HPV vaccination for the treatment of refractory cutaneous warts.