What is the cause of excessive uterine bleeding?

Menorrhagia, medically referred to as abnormal uterine bleeding or dysfunctional uterine bleeding, is a serious gynecological condition characterized by vaginal bleeding significantly heavier than normal menstrual flow, along with changes in the timing, cycle, and regularity of bleeding. Menorrhagia may be caused by various factors, including but not limited to the following:

1. Hormonal imbalances: An imbalance between estrogen and progesterone is one of the most common causes of menorrhagia. This may be related to ovarian dysfunction, polycystic ovary syndrome (PCOS), and other conditions.

2. Medication factors: Certain medications, such as anticoagulants and hormonal drugs, may also cause abnormal bleeding.

3. Other factors: These include mental stress, malnutrition, endocrine disorders such as hyperthyroidism, infections, and more.

4. Disease-related factors: Menorrhagia may be caused by ovarian dysfunction, organic lesions such as endometrial hyperplasia, polyps, fibroids, neuroendocrine disorders, and systemic diseases.

Specifically, the symptoms of menorrhagia can be categorized into various types, such as blood-heat type, qi-deficiency type, and blood-stasis type, each with its own distinct clinical manifestations. When treating menorrhagia, it is essential to adopt corresponding therapeutic approaches based on the patient's specific syndrome type, such as reinforcing qi to consolidate the foundation, strengthening the spleen to control bleeding, or clearing heat and cooling the blood.