Symptoms of blood thickening and cerebral hypoperfusion: Patients may experience chronic dizziness with severe nausea or episodes of visual rotation. Patients may also have symptoms of chronic lack of oxygen in brain cells, such as memory loss, slow reaction time, sleepiness, and difficulty in falling asleep, and sleep is mostly light. For patients with thick blood and cerebral blood supply deficiency, it can also be accompanied by drowsiness and heaviness, immobility, as well as depression. It is recommended that the patient should be checked for lipids, blood rheology, and serum homocysteine, etc. For cerebral blood supply deficiency with thick blood, the patient can be given some lipid-lowering drugs and, if necessary, fibrinogen-lowering drugs to promote blood circulation. If necessary, the patient can be given medications to improve circulation and activate blood circulation, such as Shuxin and Ginkgo Biloba.