Plantar warts result from HPV type 1 infection of the plantar aspect of the foot. They are slightly elevated skin-colored papules or nodules with a surface devoid of skin lines. Black puncta due to capillary thromboses may stud the surface. Walking causes pressure that both embeds the wart into the underlying soft tissue and causes an overlying white or yellow callus formation. This can be clearly seen in a higher magnification view .
Plantar warts can be very painful when weight bearing.
Venereal warts are most commonly caused by HPV types 6 and 11. Transmission is both sexual and non sexual. The lesions are filiform or sessile shaped. They are soft skin-colored sometimes pink, red, or brown macules, papules, or plaques. These can be pinpoint or apple size.