Genital Warts (HPV) (for Teens) - Nemours KidsHealth - Warts above the penis
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They are caused by the human papillomavirus (HPV), and they are a symptom of HPV. Genital. Genital warts consist of fibrous overgrowths covered by a thickened, outer layer. They can appear around a man's scrotum, anus, and penis.