Insufficient blood supply to the brain can cause inflexible fingers. Patients have episodic symptoms, most of which resolve completely within 24 hours. Other symptoms can also occur in cases of cerebral insufficiency, including sensory impairment, speech impairment, dizziness, balance impairment, and blackness, hemianopia, and quadrant blindness. The majority of patients with cerebral insufficiency are middle-aged or elderly and may have a history of hyperlipidemia or diabetes mellitus. Patients with heart disease, such as congenital heart disease, cardiac mucinous tumors, and severe coronary artery disease and arrhythmias, can cause a decrease in the amount of blood pumped by the patient’s heart, which may lead to hypoperfusion of the brain and cause cerebral hypoperfusion. Patients who have severe hypotension, massive diarrhea and vomiting may cause hypovolemia, which may also easily cause hypoperfusion of the brain, leading to cerebral hypoperfusion, etc.