Abnormal Bleeding and What It Means

Periods can be weird.

Some women are regular as clockwork and can tell me the exact date and time of day that their periods will arrive.  Others have a range of normal, somewhere between 28 and 30 days, for example, that they mark the calendar by.  Then there are periods that don't follow the rules.  These are periods that set in with a vengeance, causing heavy bleeding never experienced before, or an "extra" period in the month, or bleeding after intercourse, or spotting with wiping.  Women end up in my office for all kinds of unusual bleeding patterns.  For women who are regular- and even those who aren't- a bout of unexpected bleeding usually causes great concern.

The reasons behind what we in gynecology call "Abnormal Uterine Bleeding" are diverse.  Whole chapters are written on how to address these issues and come to a diagnosis.  For all intents and purposes, abnormal bleeding can be broken down into three main categories:
1.  Hormonal:  The first thing we check in abnormal vaginal bleeders is a pregnancy test!  Assuming that that is negative, there can be a myriad of other hormonal causes.  Thyroid disorders cause irregular bleeding.  Hormonal imbalances such as those seen in polycystic ovarian syndrome can lead to irregular bleeding.
2.  Anatomic:  These are actual structural problems found in the pelvis.  Fibroids or polyps of the uterus and/or cervix can contribute to abnormal bleeding.  Ovarian cysts also can be a cause of abnormal bleeding.  The best way of diagnosing structural problems is with a physical exam as well as imaging via ultrasound.  To better visualize the lining of the uterus, a procedure called an SIS (saline infused sonohystogram) may be done in the office setting.  The results from ultrasound generally aid significantly in making the diagnosis.
3.  Cancer: This is the least likely category, but is a consideration based on age and risk factors.  Cervical cancer and uterine cancer can both present with abnormal bleeding.  The diagnosis is made here with a tissue biopsy, where tissue is removed from the uterus (endometrial biopsy) or cervix and sent to be examined under the microscope.  Any kind of vaginal bleeding in a postmenopausal woman warrants immediate evaluation.

There are other reasons that don't fit neatly into the categories mentioned above: sexually transmitted infections (especially Chlamydia!) or genetic bleeding disorders can lead to prolonged or unexplained bleeding.  Then there is the "we don't really know why" category.  Really- it is its own category in the medical literature!  This diagnosis should only be used when everything else has been thoroughly evaluated and come up negative.

The causes of abnormal bleeding can usually be determined with a good history and physical exam, as well as with the aid of laboratory testing and the occasional pelvic ultrasound.  So if your period goes wacky on you- get it checked out.  Actually, first take a pregnancy test and then get it checked out.  It is always good to know if there is something more going on that you should be aware of.

-Dr. Jahedi