Endometriosis is usually a long-lasting (chronic)
disease. When you have
endometriosis, the type of tissue that lines your uterus is
also growing outside your uterus. The clumps of tissue (called implants) may have grown on your ovaries or
fallopian tubes, the outer wall of the
uterus, the intestines, or other organs in the belly. In rare cases they
spread to areas beyond the belly.
With each menstrual cycle, the implants go through the
same growing, breaking down, and bleeding that the uterine lining (endometrium)
goes through. This is why endometriosis pain may
start as mild discomfort a few days before the menstrual period and then usually
is gone by the time the period ends. But if an implant grows in a sensitive
area, it can cause constant pain or pain during certain activities, such as
sex, exercise, or bowel movements.
Endometriosis symptoms vary, and some women have no symptoms.
Pain and infertility are the most common symptoms. In women who are able to conceive, symptoms may get better during pregnancy, but they may return after having the baby.
Here are other symptoms:
Irregular periods. In 15%-20% of cases there is premenstrual spotting.
Periods that are unusually heavy, especially if they produce large clots and last more than seven days
Pain that gets worse during your period
Pain during ...
Some women have no symptoms or problems. Others have mild to severe
infertility. There is no way to predict whether
endometriosis will get worse, will improve, or will stay the same until
Between 20% and 40%
of women who are infertile have endometriosis (some have more than one possible
cause of infertility).1 Experts don't fully
understand how endometriosis causes infertility. It could be that:2
Scar tissue (adhesions) may
form at the sites of implants and change the shape or function of the ovaries,
fallopian tubes, or
The endometrial implants may change the
chemical and hormonal makeup in the fluid that surrounds the organs in the
abdominal cavity (peritoneal fluid). This may change the menstrual cycle or prevent a pregnancy.
A common complication of
endometriosis is the development of a cyst on an ovary. This blood-filled
growth is called an
ovarian endometrioma or an endometrial cyst.
Endometriomas can be as small as 1 mm or
more than 8 cm across. The symptoms of an ovarian cyst may be the same as those of endometriosis.