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Types of warts similar to calluses and corns

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Picture of a common wart on the index finger

Picture of of plantar wart and mosaic wart on the foot

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A common wart or plantar wart can look like a callus or corn. But calluses and corns are caused by friction or pressure, and warts are caused by a virus (human papillomavirus, or HPV).

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Last Updated: 12/07/2007