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Complications
By Mayo Clinic staffExcessive or prolonged menstrual bleeding can lead to other medical conditions, including:
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Iron deficiency anemia. In this common type of anemia, your blood is low on hemoglobin, a substance that enables red blood cells to carry oxygen to tissues. Low hemoglobin may be the result of insufficient iron. Menorrhagia may deplete iron levels enough to increase the risk of iron deficiency anemia. Signs and symptoms include pallor, weakness and fatigue.
Although diet plays a role in iron deficiency anemia, the problem is complicated by heavy menstrual periods. Most cases of anemia are mild, but even mild anemia can cause weakness and fatigue. Moderate to severe anemia can also cause shortness of breath, rapid heart rate, lightheadedness and headaches.
- Severe pain. Heavy menstrual bleeding often is accompanied by menstrual cramps (dysmenorrhea). Sometimes the cramps associated with menorrhagia are severe enough to require prescription medication or a surgical procedure.
- Jurema M, et al. Menorrhagia. http://www.uptodate.com/home/index.html. Accessed April 25, 2009.
- Excessive menstrual bleeding: Quick primer. National Women's Health Information Center. http://www.healthywomen.org/aub/pg1.html. Accessed April 25, 2009.
- Women and anemia — Heavy menstrual bleeding and fibroids. National Anemia Action Council. http://www.anemia.org/patients/featurearticles/content.php?contentid=000242§ionid=00015. Accessed April 25, 2009.
- Vaginal bleeding. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merck.com/mmpe/sec18/ch242/ch242e.html. Accessed April 25, 2009.
- Abnormal uterine bleeding. The American College of Obstetricians and Gynecologists. http://www.acog.org/publications/patient_education/bp095.cfm. Accessed April 25, 2009.
- Questions to ask about excessive menstrual bleeding. National Women's Health Information Center. http://www.healthywomen.org/aub/pg3.html. Accessed April 25, 2009.
- Menstrual periods fact sheet. The American College of Obstetricians and Gynecologists. Accessed April 25, 2009.
- Goodman A. Terminology and evaluation of abnormal uterine bleeding in premenopausal women. http://www.uptodate.com/home/index.html. Accessed April 25, 2009.
- de Silva NK, et al. Definition and evaluation of abnormal uterine bleeding in adolescents. http://www.uptodate.com/home/index.html. Accessed April 25, 2009.
- Lobo RA. Abnormal uterine bleeding: Ovulatory and anovulatory dysfunctional uterine bleeding, management of acute and chronic excessive bleeding. In: Katz VL, et al., eds. Comprehensive Gynecology. 5th ed. Philadelphia, Pa.: Mosby; 2007. http://www.mdconsult.com/das/book/body/133793247-3/834086474/1524/248.html#4-u1.0-B978-0-323-02951-3..50040-6_1192. Accessed April 25, 2009.
- Cervical cancer screening. Centers for Disease Control and Prevention. http://www.cdc.gov/cancer/cervical/basic_info/screening/. Accessed April 25, 2009.
- Gallenberg MM (expert opinion). Mayo Clinic, Rochester, Minn. April 29, 2009.
