Genital warts can be prevented. Common warts are clusters of effected cells. Most are round and raise above the skins surface. Once a person has contacted warts, generally more are introduced to other sites on the body accidentally or unconsciously by scratching or abraising the wart then introducing it to another site on the body. This process is called 'autoinoculation'.
Common warts posses little potential for health problems unless they bleed, change color or shape.
Most are removed for cosmetic purposes or because location on the body cause irritation due to rubbing on clothing, etc. Plantar warts are confined to bottoms of the feet. They are generally flat due to being pushed upward into the foot by the body's weight. They are frequently very painful. Plantar warts are often confused with bunions.