We often hear doctors in clinical practice say that your dizziness is caused by high blood pressure. This makes many patients also mistakenly believe that dizziness is caused by high blood pressure. As a result, many patients add antihypertensive drugs simply based on their self-perceived symptoms without measuring their blood pressure, and the results are predictable. The two main reasons for mistaking hypertension for dizziness: 1. Patients with hypertension tend to have elevated blood pressure when they are dizzy; 2. Some patients with hypertension take antihypertensive medication and then have their dizziness relieved as their blood pressure drops. Reasons for thinking that dizziness is not caused by hypertension: 1, dizziness also occurs when blood pressure is low, and disappears as blood pressure rises; 2, dizziness does not necessarily occur when blood pressure is high, and a significant number of hypertensive patients do not have dizziness; 3, some hypertensive patients take antihypertensive drugs, blood pressure decreases while dizziness increases; Since dizziness is not definitively related to hypertension, what is the mechanism of dizziness? It is mainly due to insufficient blood supply to the brain: when the blood supply to the head is insufficient in hypotension, dizziness disappears after the pressure is raised; in hypertension, if both dizziness and hypertension are the result of vasospasm contraction or atherosclerosis, then drugs to relieve vasospasm can not only lower blood pressure, but also improve cerebral ischemia caused by cerebral vasospasm, so dizziness is relieved at the same time. If the blood pressure is raised to meet the blood supply to the brain, then there may be no dizziness when the blood pressure is high, but lowering the blood pressure makes the dizziness worse. Therefore, antihypertensive drugs should not be abused clinically to treat dizziness. Regardless of whether Chinese medicine or western medicine is used to treat hypertension, ensuring blood supply to the tissues is the first priority. In cerebral infarction, the brain is ischemic and the blood pressure reactively increases as a self-protective mechanism, and the blood pressure should not be forcibly lowered.