There are several types of warts, the more common are: – Common warts: they usually grow on fingers and toes. They have a rough, grainy appearance and a rounded top. Common warts are grayer than the surrounding skin. – Plantar warts: they grow on the soles of the feet. Unlike other warts, plantar warts grow into your skin, not out of it. They appear as a small hole in the bottom of your foot surrounded by hardened skin. Plantar warts can make walking uncomfortable. – Flat warts: they usually grow on the face, thighs, or arms. They have a flat top and can be pink, brownish, or slightly yellow. – Filiform warts: they grow around mouth or nose and sometimes on the neck or under the chin. They are small and shaped like a tiny flap or tag of skin. Filiform warts are the same color as your skin. – Periungual warts: they grow under and around the toenails and fingernails. They can be painful and affect nail growth.