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 ...

You can not get warts from touching a frog or toad. Warts are a virus and they're caused by a DNA-based virus that is contagious from person to person. Narrator Generally, the virus is transferred ...