Warts are caused by human papilloma virus, of which there are more than 100 types. They are transmitted by close contact and auto-inoculation.


Common warts are caused by the human papillomavirus (HPV). The virus is quite common and has more than 100 types, but only a few cause warts on your hands. Some strains of HPV are acquired through sexual contact. Most forms, however, are spread by casual skin contact or through shared objects, such as towels or washcloths. The virus usually spreads through breaks in your skin, such as a hangnail or a scrape. Biting your nails also can cause warts to spread on your fingertips and around your nails.


1.Verruca vulgaris (common warts)-Single or multiple firm papules with hyperkeratotic, clefted surface

2.Verruca plana (plane warts)- Skin colored, flat smooth palpable papules :Koebner phenomenon due to autoinoculation

3.Palmoplantar warts

  • Superficial (mosaic): Painless, hyperkeratotic papules and plaques
  • Deep (myrmecia): Painful, deep seated papules with collar
  1. Filiform warts -Thin elongated, firm projections on a horny base


  • Children and young adults, because their bodies may not have built up immunity to the virus
  • People with weakened immune systems, such as those with HIV/AIDS or people who’ve had organ transplants


  • Avoid direct contact with warts. This includes your own warts.
  • Don’t pick at warts. Picking may spread the virus.
  • Don’t use the same emery board, pumice stone or nail clipper on your warts as you use on your healthy skin and nails. Use a disposable emery board.
  • Don’t bite your fingernails. Warts occur more often in skin that has been broken. Nibbling the skin around your fingernails opens the door for the virus.
  • Groom with care. And avoid brushing, clipping or shaving areas that have warts. If you must shave, use an electric razor.



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