Postural hypertension can cause dizziness, blurred vision, and falls, which can be harmful. Postural hypertension is defined as an increase in systolic blood pressure of at least 20 mmHg after standing up, which is normal when the patient is lying down, but high blood pressure occurs when the patient gets up. The reason is that when a person suddenly stands up, all the blood of the whole body is concentrated in the lower body, which causes insufficient blood volume in the area above the heart, and then leads to a sudden increase in blood pressure caused by sympathetic excitation and vasoconstriction. Postural hypertension can lead to a series of symptoms in the brain, such as head swelling and dizziness, blurred vision, tinnitus, etc. In more serious cases, it can also lead to falls, intracerebral hemorrhage, and even hypertensive encephalopathy. For patients who often have postural hypertension, it is important to move slowly from a lying position to a standing position, especially when going to the toilet or squatting for a long time. In general, postural hypertension does not require antihypertensive medication, but falls and intracerebral hemorrhage caused by high blood pressure require prompt medical attention.