A wart is a skin growth caused by a viral infection called the human papillomavirus (HPV). HPV infects the top layer of skin. The virus enters the broken skin causing the skin to form a wart. Warts typically grow on hands and feet, but can develop on other parts of the body. Warts are contagious and can be spread to other parts of your body or you can infect another person.
The 5 different types of warts:
Common Warts – Usually grow on the hands, they are gray-brown, rough and shaped like a dome.
Filiform Warts – Usually grow around the mouth, neck, eyelids and nose. They are long, narrow, cone-shaped and the same color as your skin.
Flat Warts – Usually grow in clusters on the face, arms or legs. They are quite small and are flat and smooth. They are light yellow-brown or even pink.
Periungual Warts – Grows under and around the toenails and fingernails. They look like rough bumps with an uneven surface and border.
Plantar Warts – Grow on the soles of the feet. They are like hard, thick patches of skin with dark specks. Over time warts will often go away by themselves. If the wart is bothersome you can have it treated. You can apply salicylic acid to the wart on a daily basis, but this could take months. A doctor can freeze a wart using liquid nitrogen or the doctor can burn the wart off using cantharidin. Warts can also be removed using laser therapy or surgery.