Which Fibroids Cause Bleeding?

There are several theories to explain how fibroids cause heavy bleeding. One explanation suggests that submucosal fibroids (located within the uterine cavity) enlarge the surface area of the endometrium (uterine lining), which may be a cause of heavy menstrual bleeding.

What triggers fibroids to bleed?

Fibroids may stimulate the growth of blood vessels, which contributes to heavier or irregular periods and spotting between periods. Elevated levels of hormones called prostaglandins may also contribute to heavy bleeding.

Do all fibroids cause bleeding?

Most women with uterine fibroids have no symptoms. However, fibroids can cause a number of symptoms depending on their size, location within the uterus, and how close they are to other organs in the pelvic region. Abnormal bleeding is the most common symptom of a uterine fibroid.