Dysfunctional Uterine Bleeding - Cause
Dysfunctional uterine bleeding (DUB) is irregular vaginal bleeding that is not caused by a
serious medical condition.
Normally one of your
ovaries releases an egg during your
menstrual cycle . This is called
ovulation. Most women who have dysfunctional uterine
bleeding get it when their ovaries don't release an egg. This can be caused by
hormone changes. When your hormone levels are out of
balance, they can affect the
lining in your uterus, causing bleeding. Dysfunctional
uterine bleeding is common before age 20 and after age 40.1
Some women have dysfunctional uterine bleeding
even though they ovulate. Experts don't fully understand this type of vaginal
bleeding. It may be caused by changes in certain body chemicals.
For more information about serious causes of vaginal bleeding problems, see the
Abnormal Vaginal Bleeding.