Skip to content

Women's Health

Font Size

Cause

    Abnormal uterine bleeding (AUB) 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 abnormal uterine bleeding get it when their ovaries don't release an egg. This can be caused by abnormal hormone changes. When your hormone levels are out of balance, they can affect the lining in your uterus, causing bleeding. Abnormal uterine bleeding is common before age 20 and after age 40.

    Recommended Related to Women

    The New HPV Test You Should Ask Your Doctor About

    By Shari SimsThere's a new, more sensitive way to screen for cervical cancer — yet only 15 percent of doctors are using it. Why the Pap may no longer be enough. Suppose there were a screening test for cervical cancer that could detect potential dangers with far more sensitivity than the Pap. A test so reliable that when it was done with the Pap, you could trust the results nearly 100 percent. Sounds like all women would be getting it, right? Well...there is such a screen — the HPV test. It's been...

    Read the The New HPV Test You Should Ask Your Doctor About article > >

    Some women have abnormal 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.

      This information is produced and provided by the National Cancer Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National Cancer Institute via the Internet web site at http:// cancer .gov or call 1-800-4-CANCER.

      WebMD Medical Reference from Healthwise

      Last Updated: March 12, 2014
      This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
      1

      Today on WebMD

      hands on abdomen
      Test your knowledge.
      womans hand on abdomen
      Are you ready for baby?
       
      birth control pills
      Learn about your options.
      insomnia
      Is it menopause or something else?
       
      woman in bathtub
      Slideshow
      Doctor discussing screening with patient
      VIDEO
       
      bp app on smartwatch and phone
      Slideshow
      estrogen gene
      Quiz
       

      Send yourself a link to download the app.

      Loading ...

      Please wait...

      This feature is temporarily unavailable. Please try again later.

      Thanks!

      Now check your email account on your mobile phone to download your new app.

      Blood pressure check
      Slideshow
      hot water bottle on stomach
      Quiz
       
      question
      Assessment
      Attractive young woman standing in front of mirror
      Quiz