Flat warts (verruca plana) are small, slightly raised bumps that appear in clusters. They're caused by the human papillomavirus (HPV), a group of more than 100 viral strains. HPV is the most common ...

Warts, in general, do not cause any discomfort and are painless. Based on the location and appearance, there are 7 types of warts. They include plantar, filiform, periungual, common, mosaic, flat and ...