• small lumps that often develop on the skin of the hands and feet.
  • caused by the human papillomavirus (HPV)


  1. common warts
  2. planar warts
  3. filiform warts
  4. Periungual warts
  5. mosaic warts


  1. warts on your face or another sensitive part of your body
  2. bleeding or signs of infection, such as pus or scabbing, around a wart
  3. wart is painful
  4. the color of the wart changes
  5. you have warts and diabetes or an immune deficiency, such as HIV/AIDS


  1. scratch, knock or bite a wart
  2. bite your nails or suck your fingers (if they have warts on them)
  3. shave your face or legs
  4. spreading virus

Risk factors

  • Children and young adults
  • People with weakened immune systems, such as those with HIV/AIDS or people who’ve had organ transplants

Diagnostic Tests

  • Examining the wart
  • Scraping off the top layer of the wart to check for signs of dark, pinpoint dots — clotted blood vessels — which are common with warts
  • Removing a small section of the wart (shave biopsy) and sending it to a laboratory for analysis


  • laser therapy
  • cryotherapy
  • peeling medicines
  • acids
  • duct tape
  • chemical therapy


  • salicylic acid
  • bichloroacetic or trichloroacetic acid


  • Wash your hands regularly, especially if you have been in contact with someone with warts.
  • Don’t pick at your warts.
  • Cover warts with a bandage.
  • Keep your hands and feet dry.
  • Wear shower shoes (flip-flops) when in a locker room or communal bathing facility
  • Avoid direct contact with warts. This includes your own warts
  • Don’t use the same emery board, pumice stone or nail clipper on your warts
  • Don’t bite your fingernails