Intramural fibroids can result in heavier menstrual bleeding and pelvic pain, back pain or the generalized pressure that many women experience. Submucosal fibroids , which are just under the lining of the uterus. These are the least common fibroids, but they tend to cause the most problems. This is the most common symptom associated with fibroids. An increase in menstrual cramps Pelvic pain or, more accurately, pressure or discomfort in the pelvis that is caused by the bulk or weight of the fibroids pressing on nearby structures Pain in the back, flank or legs as the fibroids press on nerves that supply the pelvis and legs Pain during sexual intercourse Pressure on the urinary system, which typically results in increased frequency of urination, including the need to get up at night.
Uterine fibroids are very common.
From 20 percent to 40 percent of women age 35 and older have uterine fibroids of a significant size. It is not known why, although genetic variability is thought to be a factor. Fibroid tumors may start in women when they are in their 20s, however, most women do not begin to have symptoms until they are in their late 30s or 40s. Physicians are not able to predict if a fibroid will grow or cause symptoms. Fibroids can dramatically increase in size during pregnancy .