Understanding Plantar Warts - webmd.com

Plantar warts are warts that develop on plantar surfaces -- that is, the soles (or bottom) of the feet. Normal standing and walking tends to force them into the skin, and the pressure causes pain to the affected area. Calluses formed by the body’s attempt to prevent spread of warts ……

What Causes Common Warts? Viruses and Skin Warts

But common warts are actually an infection in the top layer of skin, caused by viruses in the human papillomavirus, or HPV, family. When the virus invades this outer layer of skin, usually through a tiny scratch, it causes rapid growth of cells on the outer layer of skin – creating the wart.…