Filamentous fibroma may refer to filiform warts or molluscum contagiosum. 1. Filiform warts: Filiform warts are benign proliferative diseases caused by human papillomavirus infection of the skin and mucous membranes. They are usually in the form of a single soft, filiform protrusion, which can be normal skin color or grayish-brown in color and are contagious, so it is recommended that the patient go to the hospital in time to have a checkup. 2. Soft fibroma: soft fibroma is also known as skin flab, the occurrence of skin flab is mainly related to skin degeneration, there are certain genetic factors, and most of them occur in the elderly, usually appearing in the neck, armpits and other parts of the body, and there is no obvious symptom, painless, itchy, there is no harm to the body. Patients are advised to go to the hospital for examination and treatment under the guidance of doctors.