The appearance of warts is the result of contracting the common HPV (human papillomavirus) virus. Because they are contagious, warts can spread by contact with the wart or something that touched the wart.

HPV (human papillomavirus) is a common virus that affects many people. Many may not even know they have it because their skin does not form warts. The reason for this is that many people’s bodies are able to fight off the virus upon recognition before warts are formed. However, when the skin is scratched, cut, or wounded, HPV can get into the skin tissue and infect it to form warts.

The skin cells then reproduce at accelerated rates to form growths at the infection site. Sometimes it takes a full year after exposure to HPV for warts to actually form.

Plantar warts are warts that form on your feet, specifically on the soles. They can become painful because of the pressure you put on your feet when standing or walking.
As their name indicates, these warts are common, often forming on your hands.
They may form anywhere on the skin, and they can form in groups. Less easily recognizable, these warts are smaller than other warts and usually grow on your legs or your face.
For many, warts will eventually go away or fall off without needing treatment because their body’s immune system will fight off the virus.
This can take a full 2 years for children and as long as 5 to 7 years for adults. For those who do not want to wait that long, there are a few common treatments that can prove effective.
Cryotherapy: This involves freezing the wart with liquid nitrogen so that it will fall off.
Prescription Medicines or Over the Counter Medicines:
Occlusion Therapy: You can use tape (particularly duct tape) or a bandage of sorts to keep the wart covered for up to two months, which causes the warts to heal. While the manner in which this method works is still somewhat unclear, it is believed that the tape creates a macerating and keratolytic environment, stimulating an immune response against the warts.

Because of the nature of the wart virus, warts can recur. Thus, it may take multiple treatments in succession for getting rid of warts.

Warts that do not react to these treatments or who keep recurring can be treated in additional ways.