Warts are a common foot problem.
Plantar warts are a viral infection on the bottom of the foot. They can be transferred from person to person and from one body part to another. They are most easily transmitted by touching or scratching infected skin, touching a towel used by someone who has warts, or walking barefoot over an infected surface. Treatment for plantar warts begins with proper diagnosis, which can be difficult, because not all sores are warts. Reaction to injury and old puncture wounds also can cause painful sores that resemble plantar warts.