Warts are common skin growths that are caused by a virus in the top layer of the skin. There are several types of warts, but common warts, plantar warts, and flat warts are most common and each has a different appearance. Common warts are rough and tend to have more of a dome-shaped appearance. They are most commonly found on the hands and fingers. Plantar warts are found on the bottom of the feet and can be raised but are usually not as raised as common warts because they are flattened with walking. Flat warts feel smoother and are not as raised as other warts. They can occur anywhere but often occur and are spread in areas of shaving. Warts can occur at any age. Warts eventually will go away on their own without treatment, but this can take months to years. There are several different treatment options for warts. Treatment options depend on a few different factors such as the type of wart, the location, and the size.