Wart
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Warts are growths on the skin. They are caused by a virus in the HPV family. They can be on the hands, feet, genital areas, or inside the mouth. Medication can be bought at a pharmacy to remove them but usually they will go away on their own. Warts are usually not dangerous to a person's health but they can be passed to other people. Drugs that are used for wart-removal usually contain salicylic acid.