Warts are a type of skin infection caused by the human papillomavirus (HPV). The infection causes abnormal growth of the skin, creating skin-colored bumps to form on the skin. The virus is contagious. You can get warts from touching someone who has them. The type of wart depends on where it is and what it looks like.
Types of warts
- Hands: These flesh-colored growths are most often on the backs of hands, the fingers, the skin around nails, and the feet.
- Flat warts: Flat warts are flat and usually appear on the face and forehead.
- Plantar warts: Plantar warts appear on the soles of the feet.
- Genitals: Warts that form on the penis, vagina or rectum. These warts are a type of sexually transmitted infection.
- Periungual and subungual: These warts form under or around fingernails and toenails.
- Cryotherapy — Liquid nitrogen, often called “cryotherapy,” is a very cold liquid that destroys warts by freezing the skin.
- Shave excision — Shave excision is a procedure that involves removing a skin wart with a blade.
- Other treatments — Examples of other treatments that may be used for warts include 5-fluorouracil cream. Immunotherapy involves the application or injection of a substance to the wart to trigger a response from your body’s immune system. These treatments are usually used for people with many warts or warts that do not respond to other treatments.