Filiform warts are caused by infection with the human papillomavirus and are contagious and prone to recurrence. It is advised not to use scissors to cut them off yourself, because the roots of the filiform warts may still be attached to the skin and remain contagious.

The best treatment for filiform warts is to go to a regular hospital's dermatology department and have them removed with a laser. Afterwards, apply interferon spray topically to effectively prevent recurrence. It is also important to avoid spicy and irritating foods, refrain from staying up late, and frequently sun and disinfect bath towels and scrubbing cloths. Do not share these items with family members to avoid infecting them.

If you develop this condition, it is advisable to seek treatment promptly when the warts are small or few in number, otherwise, they could proliferate on your body, potentially appearing on the neck, armpits, and groin.