Etiology of Dysfunctional Uterine Bleeding

Dysfunctional uterine bleeding (DUB), though relatively common among women, can cause significant harm to a woman’s physical health. In severe cases, it may even impair fertility; therefore, women must take this condition seriously and actively adopt preventive measures in daily life. So, what are the causes of dysfunctional uterine bleeding? Below, we address this question.

Causes of Dysfunctional Uterine Bleeding

1. Insufficient Hormone Secretion

Inadequate estrogen secretion may trigger dysfunctional uterine bleeding. Estrogen production is closely linked to follicular development. If the endometrium fails to adequately regenerate following menstruation, follicular development may become delayed, resulting in insufficient estrogen secretion. Over time, this hormonal imbalance can lead to dysfunctional uterine bleeding.

2. Immature Ovarian Development

Dysfunctional uterine bleeding frequently occurs in adolescents, often due to immature ovarian development. Immaturity of the ovaries may disrupt the regulatory feedback mechanism between the pituitary gland and ovaries, potentially leading to menorrhagia—and eventually, dysfunctional uterine bleeding.

3. Ovarian Function Decline

Dysfunctional uterine bleeding commonly affects perimenopausal women, primarily due to declining ovarian function. As ovarian function wanes, the number of follicles gradually decreases, and the pituitary gland’s response to gonadotropins diminishes—ultimately contributing to dysfunctional uterine bleeding.

4. Luteal Phase Deficiency

Dysfunctional uterine bleeding may also stem from luteal phase deficiency. Insufficient progesterone secretion during the luteal phase—or premature luteal regression—can result in inadequate secretory changes in the endometrium, thereby triggering dysfunctional uterine bleeding.

The above outlines the primary etiologies of dysfunctional uterine bleeding. We hope this information proves helpful to you.