Frequent dizziness in 40-year-old women can be caused by insufficient blood supply to the brain or by neurasthenia. When the cerebral blood supply is insufficient, the patient can experience ischemia and hypoxia in the brain. In the case of insufficient blood supply to the vertebrobasilar system, patients mainly present with cerebellar and brainstem ischemia and hypoxia, dizziness, nausea, vomiting, and also balance disorders and ataxia. If the patient is neurasthenia, it generally tends to cause sleep disorders, and the patient may experience dizziness, palpitations, chest tightness, and some patients may also experience more sweating. If necessary, treatment with nerve regulating drugs can be given, such as oral glutamate, tranquilizer and brain tonic liquid, and blood and brain clearing granules. Most women in their 40s have atherosclerosis, which can easily cause dysfunction of the blood supply to the brain and can also cause hypertension.