Plantar warts are lesions on the skin that are caused by the human papillomavirus, more commonly known as HPV This virus can enter into the skin on your feet through tiny cracks and cuts, and form bumps with tiny black specks in the middle. These are not the “roots” of the wart like many falsely believe, but are small blood clots. These pesky annoyances may also cause calluses, as they are often located on high pressure areas of the feet.
Warts can appear as a single lesion or in formations of several. “Kissing warts” are warts that have formed in areas that have contact with each other like in between toes. This is because warts are contagious, and the virus can easily spread to other areas of the foot. Another formation that is common is called a “mosaic.” This develops when several warts are clustered together to form what looks like a single, giant wart.