The plantar surface of your foot is the sole of your foot. A wart that grows into the sole of your foot is called a plantar wart.
Warts are caused by viruses that are present everywhere. Some people get warts more easily than other people.
You may notice a growth on the undersurface of your foot. It may grow directly into the sole of the foot, it may rise above the surface of the foot, or it may do both. You may have pain when you put weight on your foot.
Your healthcare provider will examine the sole of your foot and the wart.
There are various ways to treat plantar warts. However, the warts are very tough and it is sometimes difficult to treat them so that they go away completely and don't grow back.