Cauliflower warts are a type of common wart that resemble the head of a cauliflower with black dots and are caused by a human papillomavirus virus, according to KidsHealth. These warts typically appear on the hands, elbows, knees and feet. Cauliflower warts also appear in the genital area, notes WebMD.
There are approximately 60 different types of HPV, and several cause warts in humans, notes WebMD. People can get HPV and warts by coming into close physical contact with a person or object with the virus, states KidsHealth.
Cauliflower warts are usually painless but cause pain when on the soles of the feet. The warts often disappear on their own, but they can be treated with freezing, cantharidin or other medication, according to WebMD.