While they last, though, the warts are ugly, irritating, and often painful. Warts can grow back. This indicates a virus is still in the body and growing. However, this is not cause for undue alarm. The virus that causes plantar warts is relatively harmless and causes few problems.
Warts can spread to other parts of the body, particularly if scratching a wart causes it to bleed.
Blood from a wart contains the virus and can cause a new wart to grow in an area that it touches. Therefore, it is important that warts be treated so they can be eliminated as quickly as possible. Infection, pain, and scarring may result from overly aggressive home therapy penetrating beneath the skin surface or epidermis. Pain can spread to other sites, and warts can be transmitted to others due to ineffective treatment. Use shower thongs or sandals, particularly in public shower rooms.