Filiform warts are mainly caused by human papilloma virus infection of the skin and are contagious. However, filiform warts themselves can not be cancerous, usually does not cause discomfort symptoms, mainly will affect the aesthetic. This is the first time I’ve ever seen one of these, and it’s been a long time since I’ve seen one of these, so I’m not sure if it’s a good one. If the skin lesions are not healed for a long time, the prolonged inflammatory stimulation will cause local cancer. In addition, the neck area should be well protected from the sun, avoiding prolonged sunlight irradiation, prolonged sunlight irradiation of the skin, ultraviolet rays are too strong, excessive stimulation, which is also easy to induce the appearance of cancerous lesions. The treatment should be formalized and avoid blindly using drugs or products with strong irritation. Repeated stimulation and friction of the skin for a long time will also induce cancerous changes in the skin cells.