Mr. Liu, 60, has been feeling dizzy and light-headed lately, and is often accompanied by tinnitus and forgetfulness. Initially, Mr. Liu did not pay attention to it and thought it was just poor blood pressure control, so he went to the cardiovascular department, adjusted his antihypertensive treatment plan and monitored his blood pressure. After two months, the results of blood pressure monitoring showed that the blood pressure was well controlled, but the above-mentioned symptoms still existed, and the phenomenon of weakness and daytime sleepiness appeared, so he finally went to the neurology department of the hospital after being persuaded by his partner and children. After arriving at the hospital, he was finally diagnosed with chronic cerebral insufficiency after relevant examinations, and a treatment plan was determined. Mr. Liu did not know about the disease “chronic cerebral insufficiency” before, and he thought it was just dizziness and lightheadedness, but did he really need treatment? Here, let’s learn more about this disease. Chronic cerebral insufficiency is a common ischemic cerebrovascular disease in middle-aged and elderly people over 45 years old, and some studies show that 80% of the elderly have different degrees of chronic cerebral insufficiency. Chronic cerebral insufficiency is often characterized by chronic and recurrent headache, dizziness, and head weight, and may be accompanied by blurred vision, weakness of limbs, forgetfulness, daytime sleepiness, nighttime insomnia, and other clinical manifestations. Chronic cerebral insufficiency is often not taken seriously because of its mild clinical manifestations and low impact on daily life. However, few patients understand that chronic cerebral insufficiency is an important link in the development of ischemic stroke (acute cerebral infarction), Alzheimer’s disease, vascular dementia, Binswanger’s disease, and other diseases, which can eventually develop into serious cerebrovascular diseases if not detected and treated early. Regarding the etiology of chronic cerebral insufficiency, the primary cause is vascular factors. The vascular factors mainly include cerebral perfusion atherosclerosis (including different degrees of plaque formation and stenosis), diffuse small arteries and vitreous degeneration of micro-arteries. The major blood supplying arteries to the brain include the internal carotid artery system and the vertebrobasilar artery system. Any cause of small diameter or endothelial damage in the arterial vessels supplying the brain will reduce the normal blood supply to the brain and lead to the development of chronic cerebral insufficiency. Among all the influencing factors, the most important one is cerebral perfusion atherosclerosis, of which hypertension, diabetes, hyperlipidemia, obesity, smoking and alcohol consumption are its traditional risk factors; hyperhomocysteinemia and metabolic syndrome are the important risk factors proposed in recent years. The second is hemodynamic factors, such as high or low blood pressure. The third is the alteration of blood composition. Medical studies have confirmed that increased blood viscosity is one of the important causes of reduced blood supply to the brain. Hyperlipidemia, thrombocythemia, hypertension, diabetes mellitus, nicotine and alcohol stimulation can increase blood viscosity. Regarding the treatment of chronic cerebral blood supply, modern medicine mainly focuses on improving cerebral circulation and removing risk factors, and there is still a lack of therapeutic drugs with clear efficacy; the holistic concept of Chinese medicine and the multi-target effect have unique aspects in treatment. Combined with years of clinical observation, I believe that chronic cerebral blood supply deficiency is mainly based on liver and kidney yin deficiency, brain marrow deficiency, and phlegm and stasis blocking the ligaments as the symptoms, so the treatment is to benefit the kidney and fill the essence, resolve phlegm and ligaments, and activate blood circulation to resolve blood stasis. Chronic cerebral insufficiency is a type of chronic cerebrovascular disease with high incidence and low awareness rate among middle-aged and elderly people, but with serious consequences, so it should be detected early and treated promptly. Some studies have shown that certain therapeutic interventions given during the period of chronic cerebral insufficiency can reduce the occurrence of serious cerebrovascular diseases to a certain extent. Middle-aged and elderly people with frequent and recurrent episodes of dizziness, headache and dizziness, accompanied by forgetfulness, insomnia, daytime sleepiness, weakness and numbness of the limbs, should be alert to chronic cerebral insufficiency, and should go to the hospital as early as possible after detection to get a clear diagnosis and take relevant treatment to prevent or delay the occurrence of serious cerebrovascular diseases, especially for patients with chronic cerebral insufficiency accompanied by neck and intracranial artery stenosis. In order to facilitate patients and their family members to have a preliminary judgment on the symptoms of chronic cerebral insufficiency, I have compiled a song for you, according to which patients or their family members can make a simple judgment before going to the hospital: Dizziness and headache, dizziness, insomnia and forgetfulness; over half a century old without cerebral infarction, go to the hospital early.