Dysfunctional Uterine Bleeding (DUB) is the most common cause of functional abnormal uterine bleeding, which is abnormal genital tract bleeding based in the uterus and found in the absence of demonstrable organic pathology. Diagnosis must be made by exclusion, since organic pathology must first be ruled out. It can be classified as ovulatory or anovulatory, depending on whether ovulation is occurring or not.

Ovulatory

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Ovulatory DUB happens with the involvement of ovulation, and may represent a possible endocrine dysfunction, resulting in menorrhagia or metrorrhagia. Mid-cycle bleeding may indicate a transient estrogen decline, while late-cycle bleeding may indicate progesterone deficiency.

Anovulatory

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Anovulatory cycle DUB happens without the involvement of ovulation. The etiology can be psychological stress, weight (obesity, anorexia, or a rapid change), exercise, endocrinopathy, neoplasm, drugs, or it may be otherwise idiopathic.

More on [ Dysfunctional uterine bleeding ]

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