If the patient’s blood pressure is not high and dizziness occurs, the specific causes are as follows: 1. To consider neurological diseases, such as stroke, cerebrovascular accident, cerebral infarction, cerebral embolism, etc., can cause dizziness and headache when blood pressure is not high. 2. Circulatory system diseases, such as unstable angina pectoris, myocarditis, pericarditis, or other cardiogenic diseases in coronary atherosclerotic heart disease, can also cause coronary artery 3. In cervical spondylosis, if the cervical spine compresses the vertebral basilar artery, it may also lead to insufficient perfusion in the posterior circulation and cause dizziness and headache. 4. However, the blood pressure is usually within the normal range.