Warts
Warts are small growths on the skin or inner linings of tbe body that are caused by a type of virus.
What Are Warts?
Warts are small areas of hardened skin that can grow on almost any part of the body. Human papilloma (pah-pih-LO-mah) viruses, or HPV, causes warts. More than 100 different kinds, or strains, of HPV exist. Warts are usually skin-colored and bumpy or rough, but sometimes they are dark and smooth. The way a wart looks depends on where it is growing, and different kinds of warts appear on different parts of the body.
Common warts usually grow on fingers and hands, especially around fingernails. These warts usually have a rough, bumpy surface with tiny black dots, which are the blood vessels that feed the wart and allow it to grow. Flat warts are much smaller than common warts and are very smooth. This type of wart typically grows in little bunches on the face and legs; as many as 100 flat warts may grow together in one place. Common warts and flat warts generally are not painful except under certain circumstances, such as when the pressure of a pencil pushes against a wart on the finger while writing. Plantar warts, which grow on the soles of the feet, can be quite painful as a person walks on them, flattening them and pushing them back into the skin. Like a common wart, a plantar wart is covered with black dots marking the place of blood
vessels.
Genital warts are small and pink, and they can grow one at a time or in bunches that make them look a bit like cauliflower. This type of wart can grow on the genitals, the skin around the genitals, the rectum, the buttocks, or in the vagina or cervix. Although most warts do not cause major health problems, genital warts may itch or bleed, and the ones caused by some strains of HPV are known to increase a woman's chances of developing cancer of the cervix without causing a wart.
Who Has Warts and Why?
About one in four people have common, flat, or plantar warts at some time in their lives. Children tend to have warts more often than adults do, and people who bite their fingernails or pick at hangnails may be more likely to have warts because tiny openings in the skin provide a way for HPV to enter the body. Someone with a weakened immune system, due to a chronic illness or an infection, for example, also may be more likely to have warts. Warts are very contagious because HPV can pass easily from one person to another by contact. Genital warts spread through sexual intercourse. In fact, they are the most common cause of sexually transmitted disease in the United States. In rare cases, a mother with genital warts can pass HPV to her baby during birth. The virus can cause growths on the baby's vocal cords or elsewhere in the infant's respiratory tract.
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