Dizziness with heavy menstruation can be caused by heavy bleeding that may cause hypovolemia, which may lead to hypoperfusion of the brain and can lead to insufficient blood supply to the brain. Insufficient blood supply to the cerebellum and brainstem, the patient may experience dizziness and can also experience balance disorders and ataxia. Additionally, heavy bleeding may cause anemia, and in cases of severe anemia, the patient may also experience a lack of oxygen to the brain, which can also manifest itself in the symptoms described above. Patients may also experience palpitations, chest tightness, shortness of breath, and in severe cases may cause heart failure, which should be treated with intravenous blood transfusion if necessary. At the same time, the cause of the disease should be analyzed and appropriate etiological treatment should be carried out. The cause of heavy menstruation may be uterine fibroids or endometrial cancer. If the patient enters menopause, it may cause dysmenorrhea and the patient can also have heavy periods. Treat the different causes accordingly, and go to a gynecologist if necessary.