Hello,
For filiform warts, several medications(like podophyllum resin, Podofilox (Condylox), Trichloroacetic and bichloroacetic acids,
Imiquimod 5% cream and interferons) are available, which can be applied directly to the surface of the warts but should be used with caution on delicate skin of penis.Other treatment options include electrical cautery, surgical removal, Carbon dioxide laser treatment and electrodesiccation.