Cerebral hypoperfusion is a chronic and widespread lack of blood supply to the brain due to various causes, resulting in a series of clinical manifestations of brain dysfunction due to ischemia and hypoxia in the brain. The clinical manifestations of cerebral insufficiency are as follows: Motor nerve dysfunction This is the most common type of aura. Due to the lack of blood supply to the brain, the nerves in charge of the body’s motor function fail to function, and the common manifestations are such as sudden distortion of the mouth, salivation, difficulty in speaking, slurred speech, aphasia or incoherence, difficulty in swallowing, weakness or inability to move one side of the limb, falling down, walking unsteadily or suddenly falling, and some limb spasms or jumping. Sensory dysfunction Due to the lack of blood supply to the brain and affect the analysis area of the brain, sensory organs and sensory nerve fibers, often manifested as facial numbness, tongue numbness, lip numbness, and one side of the limb numbness or foreign body sensation; some people have blurred vision, or even sudden momentary blindness; many people have a sudden vertigo; some limbs spontaneous pain; others suddenly appear tinnitus, hearing loss, etc. Mental awareness abnormalities such as always wanting to sleep and being drowsy all day long are not caused by overexertion, but are a precursor sign of insufficient blood supply to the brain. Some people also show insomnia. Some people have some changes in personality, such as solipsism, silence or indifferent expression, and some are polyphonic and impatient.