As with all warts they are caused by viruses but the virus that causes verruca plana are calledhuman papillomavirus(HPV). At this time there have been more than a hundred strains identified that can cause this type of wart but the main causes of verruca plana are from the human papillomaviru...
Over-the-counter treatments are usually based on topicalsalicylic acid, with or without other additives, such as lactic acid. The response rate is from 40% to 84% (average, 61%). Other topical therapies used includecantharidin(so-called “blister beetle juice”),imiquimod,tretinoin, and 5-flu...