Plantar warts are warts that develop on plantar surfaces — which is, the soles (or bottom) of the feet.
Normal standing and walking will force them in to the skin, as well as pressure is painful to the affected area. Like all warts, they may be harmless and could disappear even with no treatment, but in many cases they are too painful to disregard. Plantar warts that grow together in a cluster are known as mosaic warts.
What Causes Plantar Warts?
Plantar warts, like all warts, are caused by a virus that invades the epidermis through tiny cuts or scrapes. The warts may not appear for weeks or months following the initial exposure.
Like other viral infections, plantar warts are contagious, commonly spread in public swimming pools, communal showers, or even your shower in your own home.
Epidemics of plantar warts sometimes break out among people who share gym or athletic facilities or who engage in group activities where bare feet would be the rule, such as yoga and martial arts.
Since most people build immunity to the virus as we grow older, plantar warts are more common in children than in adults. They also are common in people who have weak immune systems, such as individuals with HIV/AIDS.