Dysfunctional Uterine Bleeding (DUB)
Alternate Names : Anovulatory Bleeding, Bleeding - Dysfunctional Uterine, DUB
DefinitionDUB is abnormal vaginal bleeding which occurs during menstrual cycles where ovulation did not take place (no egg was produced).
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Overview, Causes, & Risk Factors
Anovulatory or dysfunctional uterine bleeding is a diagnosis of exclusion. This means that it is determined ONLY after other causes of abnormal uterine bleeding (such as systemic diseases, medications, early pregnancy disorders, eating disorders, gynecological infections, structural anomalies, or tumors) have been ruled out.
Anovulatory cycles are common for the first year after menarche (when menstrual periods first start) and later in life as women approach menopause (the cessation of menstrual periods). Approximately 20% of cases occur in adolescents and 40% in women over 40 years old. Obesity, excessive exercise, and emotional stress may be risk factors for DUB.
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