Patients with high blood pressure often show dizziness and headache, and the reasons are as follows: 1. Elevated blood pressure will cause insufficient cerebral blood supply, cerebral tissue ischemia, hypoxia and dizziness, headache symptoms, elevated blood pressure will cause intracranial arterial dilatation so that the intracranial pressure increases, and dizziness, headache will also occur. 2. Patients with high blood pressure are often combined with atherosclerosis, and similarly, cerebral arteries will also experience atherosclerosis resulting in cerebral vascular narrowing. The brain arteries will also suffer from atherosclerosis, resulting in narrowing of the cerebral blood vessels and insufficient blood supply to the brain tissues, which will lead to dizziness and headache. If hypertensive patients have dizziness and headache, they should actively control their blood pressure to prevent acute cerebral hemorrhage or cerebral infarction.