What causes common warts?

Common warts are a common skin condition, also known as verrucas or warts, primarily caused by infection with the human papillomavirus (HPV). This viral infection affects the skin and mucous membranes, leading to the formation of benign skin growths on the skin surface. Common warts typically appear as small, hard, painless tumors on the skin of areas such as the fingers, back of the hands, and edges of the feet. These tumors may gradually increase in size and number, with a rough surface and a firm texture upon touch. Common warts can spread through direct or indirect contact, such as contact with a person who has common warts or through contact with contaminated objects. In addition, skin injuries may also provide an entry point for HPV infection. Treatment options for common warts include topical medications, laser therapy, cryotherapy, and others; the specific treatment plan should be determined according to the patient's condition and the physician's recommendations.