The vertebrobasilar artery mainly supplies the brainstem and cerebellum, and increased blood flow in the vertebrobasilar artery can lead to dizziness and other symptoms, caused by two main reasons: first, it is caused by cerebral arteriosclerosis, such as the formation of intravascular plaque caused by dyslipidemia, which leads to narrowing of the inner diameter of the blood vessel, and spasm of the vertebrobasilar artery can also cause increased blood flow in the vertebrobasilar artery; second, it is caused by cervical spine diseases, such as cervical disc The herniated discs, cervical spine cold, cervical spine trauma, etc., the herniated discs compress the vertebrobasilar artery, resulting in the artery contraction, the symptoms of increased blood flow. The symptoms of increased blood flow in the basilar artery are treated with oral vasodilator drugs, such as nimodipine tablets.