They have a rough surface on which tiny dark specks may be seen. They may grow on any part of the body and their appearance depends on their location. Warts in the genital or rectal area have a wet appearance and have been said to look like cauliflower. We do not know why some people get warts easily while others never get them. There is no way to prevent warts.
Warts are common.
They may bleed if injured. However, they never turn cancerous. Since warts are caused by a virus, they are slightly contagious. You should not share clothing or linen with someone who has warts. Warts may spread on the body and seed other areas.