Women's Health -

Endometriosis

Endometriosis is a common health problem in women. It gets its name from the word endometrium, the tissue that lines the uterus (womb). In women with this problem, tissue that looks and acts like the lining of the uterus grows outside of the uterus in other areas. These areas can be called growths, tumors, implants, lesions, or nodules.

Most endometriosis is found on or under the ovaries, behind the uterus, on the tissues that hold the uterus in place, or on the bowels or bladder. Endometriosis rarely grows in the lungs or other parts of the body. This "misplaced" tissue can cause pain, infertility, and very heavy periods.

No one knows for sure what causes this disease, but scientists have a number of theories. They know that endometriosis runs in families. If your mother or sister has endometriosis, you are six times more likely to get the disease than other women. So, one theory suggests that endometriosis is caused by genes.

Another theory is that during a woman's monthly periods, some endometrial tissue backs up into the abdomen through the fallopian tubes. This transplanted tissue then grows outside the uterus. Many researchers think a faulty immune system plays a part in endometriosis. In women with the disease, the immune system fails to find and destroy endometrial tissue growing outside of the uterus. Plus, a recent study shows that immune system disorders (health problems in which the body attacks itself) are more common in women with endometriosis. More research in this area may help doctors better understand and treat endometriosis.

Why do patches of endometriosis cause pain and health problems?

Growths of endometriosis are almost always benign or not cancerous, but still can cause many problems. To see why, it helps to understand a woman's monthly cycle. Every month, hormones cause the lining of a woman's uterus to build up with tissue and blood vessels. If a woman does not get pregnant, the uterus sheds this tissue and blood. It comes out of the body through the vagina as her menstrual period.

Patches of endometriosis also respond to a woman's monthly cycle. Each month the growths add extra tissue and blood, but there is no place for the built-up tissue and blood to exit the body. For this reason, growths tend to get bigger and the symptoms of endometriosis often get worse over time.

Tissue and blood that is shed into the body can cause inflammation, scar tissue, and pain. As the misplaced tissue grows, it can cover or grow into the ovaries and block the fallopian tubes. This can make it hard for women with endometriosis to get pregnant. The growths can also cause problems in the intestines and bladder.

Why is it important to find out if I have endometriosis?

The pain of endometriosis can interfere with your life. Studies show that women with endometriosis often skip school, work, and social events. This health problem can also get in the way of relationships with your partner, friends, children, and co-workers. Plus, endometriosis can make it hard for you to get pregnant.

In Depth
Did You Know?
  • About five million women in the United States have endometriosis. This makes it one of the most common health problems for women.
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