Filiform warts are a viral infection, the treatment is mainly drugs, freezing, laser, etc., so usually in the dermatology, laser department, if larger need surgery can also go to the surgery. Filiform warts are caused by human papillomavirus infection, is a special type of common warts, mainly manifested as a bulge in the skin, may be the normal color of the skin, may be brownish-gray, is more common in the face, may also occur in the neck and so on. Most filiform warts are relatively small, mainly manifested as skin symptoms, you can go to the dermatology or laser department, through drugs, freezing, laser and other methods can be removed, but there are also some filiform warts are relatively large, need to be surgically removed, in this case, you can also go to the surgery of the Department of Surgery, usually General Surgery. Filiform warts should be selected according to the specific circumstances of the appropriate department to visit, if you can not be clear, you can consult a doctor.