More specifially, a wart is a benign growth on the skin caused
by an infection with 'human papillomavirus'.
Note that - a few of the many types of this virus are known to be a causal factors in the production of tumours, which is why it is good advice to have new/unknown growths on the skin checked by a qualified person.
Types of warts:
- Common warts form horny papules (1-10mm in diameter) usually located on the backs of the hands. Most will clear spontaneously within two years.
- Plantar warts (or verrucae) can occur on the soles of the feet and are often tender and especially sensitive to pressure.
- Plane warts are flat, skin coloured, and therefore difficult to see. They are usually located on the face and may be present in very large numbers.
- Genital warts are frequently associated with other genital infections. Infected women have an increased risk of developing cervical cancer (see also cervical cancer news).