How do people get warts?

Warts are small bumps that can show up on our skin, especially on our hands, knees, or elbows. What are they? Where do they come from? We asked Dr. Kaveh Hoda to help us find the answer. Got a question that’s got you TOADally stumped? Send it to us at BrainsOn.org/contact, and we’ll help sort out wart’s wart. See omnystudio.com/listener for privacy information.