Dysfunctional Uterine Bleeding (DUB) is best described as

• A. Bleeding after menopause
• B. Abnormal uterine bleeding in the absence of recognizable pelvic pathology, general medical disease, or pregnancy; disruption in normal cyclic pattern of ovulatory hormonal stimulation to endometrial lining
• C. Heavy menstrual bleeding due to structural lesions
• D. Abnormal uterine bleeding caused by pelvic organic pathology

Answer: (B)

Dysfunctional uterine bleeding describes abnormal uterine bleeding that cannot be explained by structural lesions, pregnancy, or another systemic disease, and it arises from disruption in the normal cyclic hormonal stimulation of the endometrium. In practice this is a diagnosis of exclusion, often due to anovulatory cycles where lack of progesterone leads to unopposed estrogen, endometrial overgrowth, and irregular shedding rather than a predictable menstrual pattern. That’s why this description fits best: the bleeding is abnormal, but there’s no identifiable pelvic pathology, pregnancy, or systemic illness driving it, and the underlying issue is irregular ovulatory hormonal signaling to the endometrium.

Bleeding after menopause and heavy bleeding from structural lesions or pelvic pathology point to other etiologies beyond DUB, such as postmenopausal causes and structural or organic factors, which is why they’re not the best fit for the definition of dysfunctional uterine bleeding.