Warts are small, rough growths on the skin that are caused by the human papillomavirus (HPV). They can appear anywhere on the body, but are most commonly found on the hands, feet, and genital area. Types of warts: 1. Common warts (verruca vulgaris): usually found on hands and fingers 2. Plantar warts (verruca plantaris): found on the soles of the feet 3. Flat warts (verruca plana): found on the face, arms, and legs 4. Genital warts (condyloma acuminatum): found in the genital area 5. Filiform wa