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Dysfunctional uterine bleeding (DUB)

Definition

Dysfunctional uterine bleeding (DUB) is abnormal bleeding from the vagina that is not due to a physical (anatomical) cause.

Alternative Names

Anovulatory bleeding; Bleeding - dysfunctional uterine; DUB; Abnormal uterine bleeding

Causes

DUB may be caused by an imbalance of hormones -- estrogen or progesterone.

Risk factors include:

  • Emotional stress
  • Excessive exercise
  • Obesity

DUB occurs in women during their reproductive years (they have started their period but have not reached menopause). About 20% of DUB cases occur in adolescents and 40% occur in women over 40.

References

Rakel P, ed. Conn’s Current Therapy 2005. 57th ed. Philadelphia, Pa: WB Saunders; 2005:1286-1288.

Stenchever A. Comprehensive Gynecology. 4th ed. St. Louis, Mo: Mosby; 2001:1082-1084.

Katz VL, Lentz GM, Lobo RA, Gershenson DM. Katz: Comprehensive Gynecology. 5th ed. Philadelphia, Pa: Mosby;2007.

Review Date: 2/5/2008
Reviewed By: Peter Chen, MD, Department of Obstetrics & Gynecology, University of Pennsylvania Medical Center, Philadelphia, PA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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