Plantar warts occur on the sole of the foot and can be very painful because the weight of the body presses against them when walking. These warts contain small pinpoint spots; these are capillaries that supply blood to the wart.
Warts are benign growths that occur anywhere on the skin, but plantar warts specifically occur on the sole of the foot. Normally, antibodies in the blood kill the virus that causes warts. However, some people are more susceptible to warts on the foot than others.
For non-painful plantar warts, they will generally go away on their own within a year. Over the counter treatments generally do not help with plantar warts due to their depth in the skin. Sometimes excision of the wart or laser treatment is required.
When excising the plantar wart, the skin is numbed and the wart is removed with a chemical. Healing time is short but the area can be painful for up to a week. In addition, lasers can be effective by stopping blood supply to the wart area.