Excluding causes such as organic lesions and blood abnormalities, abnormal uterine bleeding caused by disorders of the neuroendocrine system is called dysfunctional uterine bleeding. Due to the dysfunction of the hypothalamus-pituitary-ovarian gonadal axis, the endometrium reacts abnormally, and its histological changes lose their regularity, and can be changes in any stage from the proliferative phase to the secretory phase. Most patients with dysfunctional uterine bleeding have anovulatory bleeding. The follicles have developed and persisted to a certain extent, but they cannot ovulate and have no corpus luteum. The endometrium, which has been affected by estrogen for a long time, will rupture or subside in the form of bleeding. The amount and duration of bleeding are uncertain. Bleeding during ovulation. Due to the decrease in estrogen levels before ovulation, a small amount of vaginal bleeding may be seen during ovulation. Premenstrual bleeding is caused by luteal insufficiency and insufficient secretion of estrogen and progesterone. Postmenstrual bleeding is caused by slow regression of the corpus luteum and continued secretion of progesterone. Bleeding caused by endometrial hyperplasia occurs because follicles continue to exist and secrete a certain amount of estrogen, causing abnormal proliferation of the endometrium. The endometrium is mostly glandular and cystic hyperplasia. Bleeding caused by incomplete endometrial maturation is caused by an imbalance in the secretion of estrogen and progesterone.
This article is provided by Baidu Reading and is excerpted from \”The Clear \”Conception\” Plan\” Author: Sun Jianqiu and Xie Yingbiao