wart, plantar

wart, plantar A wart that grows on the sole of the foot. Plantar warts are different from most other warts. They tend to be flat and cause the buildup of a callus that has to be peeled away before the plantar wart itself can be seen. Plantar warts may attack blood vessels deep in the skin, and they can be quite painful. Plantar warts are among the conditions caused by the human papillomavirus (HPV). See also human papillomavirus.