How are flat warts characterized in patients with human papillomavirus (HPV) infection?

Updated: Feb 20, 2020
  • Author: Peter A Gearhart, MD; Chief Editor: Pranatharthi Haran Chandrasekar, MBBS, MD  more...
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Flat warts (verruca plana) most often occur in groups of small plaques less than 5 mm in diameter on the face and hands. They often are not obvious but may induce significant disturbances of pigmentation. Regression usually occurs spontaneously after several years, and pruritus or erythema occurs several weeks before their disappearance.

Flat wart. Flat wart.

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