What Causes Prolonged Menstruation?

Most women experience prolonged menstrual periods characterized by persistent, irregular bleeding—sometimes accompanied by blood clots or dark-colored menstrual blood. What causes prolonged menstruation?

Causes of Prolonged Menstruation

Common causes of prolonged menstruation include polycystic ovary syndrome (PCOS) and other endocrine disorders. Additionally, systemic conditions such as coagulation disorders or thyroid dysfunction may also alter the menstrual cycle. Prolonged menstruation may also result from certain gynecological conditions—for example, submucosal uterine fibroids—which typically present with extended menstrual duration and significantly increased menstrual flow.

The simplest way to identify the underlying cause of prolonged menstruation is through targeted diagnostic testing—including hormonal assays and pelvic ultrasound—to determine the etiology. Normal menstrual bleeding lasts up to seven days; if bleeding persists beyond this duration, it constitutes prolonged menstruation. Extended menstrual periods in women may stem from conditions such as uterine fibroids, endometrial polyps, cervical erosion, or cervical inflammation—all of which can cause abnormal vaginal bleeding. Prolonged vaginal bleeding can significantly impact a woman’s physical health.

It is recommended to investigate the specific cause of prolonged menstruation and administer appropriate, symptom-targeted treatment—including hemostatic therapy. Some women suffer from dysfunctional uterine bleeding, which can further exacerbate menstrual irregularities. During periods of increased menstrual flow, women should maintain perineal hygiene and frequently change sanitary pads. After menstruation ends, consuming foods that tonify Qi and nourish blood is advisable. We hope this information proves helpful!