Flat warts resemble common warts that are caused by cutaneous types of HPV. These painless, flat, and sometimes discolored lumps most often appear on the backs of the hands and the face. They tend to develop in places that have been damaged, such as cuts or scratches.
Generally, they disappear on their own after some time. Before they go away, however, local inflammation can occur, resulting in redness and swelling around the warts.
The diagnosis of flat papilloma is usually made by a dermatologist. It is important to conduct a medical interview with the patient, regarding general complaints, existing diseases, and the presence of a risk factor responsible for allergies.
