Warts are growths on the skin caused by an infection with the human papilloma virus, or HPV. Types of warts include:
-- Common warts (often appear on the fingers)
-- Plantar warts (often appear on the soles of the feet)
-- Genital warts (sexually transmitted diseases)
-- Flat warts (usually appear in places where one shaves frequently)
In children, warts often go away on their own. In adults, however, they tend to stay. Warts are often removed for cosmetic reasons or to eliminate discomfort.