Causes of dizziness due to hypotension: 1. Because of the slow blood circulation caused by the drop in blood pressure, the blood supply to the distal capillaries is insufficient and the blood vessels are ischemic, therefore, it will lead to insufficient blood volume in the peripheral circulation of the cerebral arteries, which will produce dizziness, accompanied by headaches and other symptoms. 2. Hypotension will also affect the tissue cells with insufficient oxygen supply and nutrient supply, especially it will affect the oxygen supply function of the brain and heart, and when it affects the oxygen supply capacity of the brain tissue, the patient will also have significant symptoms of dizziness and headache. Patients with long-term hypotension may experience dizziness and headache. 3. Patients with long-term hypotension may experience organ insufficiency, such as chronic cardiac insufficiency, cerebral insufficiency, and renal insufficiency, and patients may further aggravate clinical symptoms and performance such as dizziness and transient blackness in front of the eyes.