Insufficient cerebral blood supply can lead to shock. Patients may suffer from hypovolemic shock, neurogenic shock and cardiogenic shock. 1. Hypovolemic shock: If a large amount of blood is lost in a short period of time, causing acute circulatory system dysfunction, leading to the emergence of insufficient cerebral blood supply and cerebral hypoxia. Decrease in blood volume triggers hypovolemic shock, which may result in symptoms such as panic, sweating, fainting, accelerated respiration, cold and clammy skin, and pallor. 2. Neurogenic shock: acute cerebral infarction patients with insufficient cerebral blood supply can trigger neurogenic shock if the vasomotor center in the brain is damaged. Symptoms such as lowered blood pressure, slowed heart rate, dilated facial capillaries and narrowed pupils may occur. 3. Cardiogenic shock: When the pump function of the heart is impaired or the discharge is reduced, it leads to insufficient blood transfusion from the heart, and the body is in a state of low blood pressure, and at the same time, it causes acute insufficiency of blood supply to the cerebral arteries, which leads to brain damage and cardiogenic shock. Symptoms such as persistent hypotension, oliguria, impaired consciousness, cold and clammy extremities, and dyspnea may occur. In case of insufficient cerebral blood supply, it is recommended to consult the Neurology Department of the hospital in time to clarify the cause of the disease, and actively treat the disease under the guidance of the doctor, so as not to delay the condition.