Vaginal Bleeding


Definition

Vaginal bleeding normally occurs during a woman's menstrual cycle, when she gets her period. Every woman's period is different. On average, a woman's period occurs every 28 days. Most women have cycles between 24 and 34 days apart. It usually lasts 4 - 7 days.

Young girls may get their periods anywhere from 21 to 45 days or more apart. Women in their 40s will often notice their period occurring less often.

Some conditions can cause abnormal vaginal bleeding. This article discusses heavy, prolonged, or irregular periods.

For vaginal bleeding due to changes in hormone levels, see: Dysfunctional uterine bleeding (DUB)


Alternative Names

Irregular menstruation; Heavy, prolonged, or irregular periods; Menorrhagia; Polymenorrhea; Metrorrhagia and other menstrual conditions; Abnormal menstrual periods; Abnormal vaginal bleeding


Causes, incidence, and risk factors

A change in hormone levels is a common cause of abnormal menstrual bleeding. For information on this cause, see: dysfunctional uterine bleeding

Other causes of heavy, prolonged, or irregular menstrual bleeding include:

  • Bleeding disorders such as Von Willebrand disease
  • Cancer of the lining of the uterus
  • Changes in birth control pills or hormone medications
  • Changes in exercise routine
  • Diet changes
  • Endometrial hyperplasia (thickening/build-up of the lining of the uterus)
  • Infection in the uterus (pelvic inflammatory disease)
  • Medical conditions such as thyroid and pituitary disorders, diabetes, cirrhosis of the liver, and systemic lupus erythematosus
  • Noncancerous growths in the womb, including uterine fibroids, uterine polyps, and adenomyosis
  • Polycystic ovary syndrome
  • Pregnancy complicationss such as miscarriage or ectopic pregnancy
  • Recent injury or surgery to the uterus
  • Recent weight loss or gain
  • Stress
  • Use of an intrauterine device (IUD) for birth control
  • Use of certain drugs such as steroids or blood thinners (for example, warfarin or Coumadin)

References

Casablanca Y. Management of dysfunctional uterine bleeding. Obstet Gynecol Clin North Am. 2008 Jun;35(2):219-34.

Lobo RA. Abnormal uterine bleeding: Ovulatory and anovulatory dysfunctional uterine bleeding, management of acute and chronic excessive bleeding. In: Katz VL, Lentz GM, Lobo RA, Gershenson DM, eds. Comprehensive Gynecology. 5th ed. Philadelphia, Pa: Mosby Elsevier;2007:chap 37.

[No authors listed] ACOG Practice Bulletin No. 110: noncontraceptive uses of hormonal contraceptives. Obstet Gynecol. 2010 Jan;115(1):206-18.

Marjoribanks J, Proctor M, Farquhar C, Derks RS. Nonsteroidal anti-inflammatory drugs for dysmenorrhoea. Cochrane Database Syst Rev. 2010 Jan 20;(1):CD001751.

Damlo S. ACOG guidelines on endometrial ablation. Am Fam Physician. 2008 Feb 15;77(4):545-549.


Request An Appointment

Review Date: 7/25/2011
Reviewed By: David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc., Susan Storck, MD, FACOG, Chief, Eastside Department of Obstetrics and Gynecology, Group Health Cooperative of Puget Sound, Bellevue, Washington; Clinical Teaching Faculty, Department of Obstetrics and Gynecology, University of Washington School of Medicine.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2004 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

adam.com
Last Updated 10/18/2011
Find a Doctor

e.g., "allergy," "diabetes"

US News Best Hospital AwardANCC Magnet Association AwardBest Doctors 2011-2012 AwardConsumer Choice #1 Award 2011-2102US News Best Medical Schools 2011 Award

Disclaimer: The information on this website is for general informational purposes only and SHOULD NOT be relied upon as a substitute for sound professional medical advice, evaluation or care from your physician or other qualified health care provider.