What are the symptoms of premenopausal menstruation?

Before menopause, due to the imbalance of ovarian function in patients, it will lead to menstrual disorders. The main clinical symptoms are sparse menstruation, menstrual cycle disorder and sudden menopause, etc., patients will also be accompanied by a large number of vaginal bleeding, palpitation, general fatigue, shortness of breath, yellow complexion and anemia, some patients may also appear persistent dripping vaginal bleeding phenomenon.