What causes flat warts on arms?

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related to an answer for: Could You Talk About Skin Warts?

1 Answer

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Warts are skin growths that are caused by the human papillomavirus (HPV). This virus is contagious and can easily get into your body through the tiniest crack in the skin. Once inside, it will affect the rate at which the skin cells reproduce causing warts to form. There are over 100 different types of HPV, with different strains of the virus producing warts on different areas of the body.