A wart is a small growth on the skin that develops when the skin is infected by a virus. Warts can develop anywhere on the foot, but they typically appear on the bottom (plantar side) of the foot. Plantar warts most commonly occur in children, adolescents and the elderly.
There are two types of plantar warts:
- A solitary wart is a single wart. It often increases in size and may eventually multiply, forming additional satellite warts.
- Mosaic warts are a cluster of several small warts growing closely together in one area. Mosaic warts are more difficult to treat than solitary warts.