Plantar Warts

A plantar wart is a skin growth on the sole of the foot caused by infection with certain strains of human papillomavirus (HPV). The virus enters through tiny breaks in the skin — most commonly in warm, moist environments such as pool decks, locker rooms, and communal showers — and establishes an infection in the outer skin layers.

Plantar warts appear as thickened, rough patches of skin on the sole, often with a cauliflower-like surface texture and small black dots within the lesion — these dots are clotted blood vessels that fed the wart tissue. Unlike warts elsewhere on the body, plantar warts are driven inward by the pressure of weight bearing, which can make them significantly painful with walking and standing.

Some plantar warts present as a single isolated lesion. Others present as mosaic warts — a cluster of multiple small warts that have merged into a larger affected area. Mosaic warts are typically more resistant to treatment than solitary warts.

Plantar warts rarely resolve without treatment in adults. Over-the-counter salicylic acid preparations can be effective for small, early warts in healthy patients — but they require consistent application over many weeks and frequently fail to eliminate the wart entirely, particularly for deeper or longer-standing lesions. Professional in-office treatment is more reliable, more efficient, and the appropriate choice for warts that have not responded to home treatment.

For diabetic patients, patients on immunosuppressive medications, and patients with peripheral vascular disease, any skin lesion on the foot — including plantar warts — should be evaluated professionally rather than treated at home.