These warts look like long threads that stick out. They often grow on your face around your mouth, eyes and nose, but they can also occur on the neck or elsewhere on the body. Like other types of warts, filiform warts are caused by the human papillomavirus (HPV). HPV types 1, 2, 4, 27 and 29 cause filiform warts.
They are usually harmless, but they can be unsightly or cause discomfort, especially if they develop in areas prone to friction or irritation. Filiform warts can sometimes bleed if they are scratched or injured.
Appearance
They are characterized by long, narrow projections that resemble tiny threads or filaments. These warts can be flesh-colored, pink, or light brown.