In stroke treatment, time is life, and delayed treatment can often lead to injury and disability, or even endanger the life of the patient. It is generally believed that 1 to 14 days before a stroke is the “near-stroke period”, and there are often nine aura symptoms that appear. Patients with hypertension, hyperhomocysteinemia, diabetes, hyperlipidemia and smokers are at high risk for stroke and should go to the hospital immediately if they develop “near-stroke” aura symptoms again. Identifying the aura of stroke and treating it at an early stage can greatly reduce the disability and death rate of patients. About three quarters of people have generalized weakness and drowsiness before a stroke, often without a clear cause, such as exercise or exertion. Unexplained weakness, drowsiness, and frequent yawning are the most characteristic features, and are often a sign of ischemia in the cerebral cortex and reticular activating system. Patients’ personalities may seem to change at this time, such as being impatient, silent, or childish, or having short term memory or reaction loss; some people suddenly lose interest in their original hobbies and interests; some people suddenly don’t like the food they love to eat; and their facial expressions become dull. These characteristics can be summarized as “change of face”, which is mostly due to the lack of blood supply to the frontal lobe of the brain. Sudden headache An unbearable, limited headache, or a headache that is completely different from the usual form, such as a headache that changes from a full headache to a limited headache, an intermittent headache to a continuous headache, or a headache accompanied by nausea and vomiting. This is often a precursor to subarachnoid hemorrhage or other brain hemorrhage. Dizziness Sudden dizziness, unsteadiness, or even fainting. It may also be accompanied by tinnitus, double vision, or nausea and vomiting, but quickly returns to normal. If postural hypotension, hypoglycemia and cervical spondylosis can be ruled out, it is often a precursor to stroke, which is due to insufficient blood supply to the vertebrobasilar system and affects the balance function of the cerebellum. Darkness in one eye A sudden inability to see in one eye, with vision restored after a few seconds to dozens of seconds, which is medically known as one-time darkness, may be a visual impairment caused by cerebral ischemia and is a sign of an impending stroke. This is related to insufficient blood supply to the brain, which affects the function of the visual center. Unfavorable speech The local ischemia of the brain makes the speech center malfunction, which is manifested by the tongue suddenly becoming stiff, slurred speech, or suddenly not being able to understand others’ language, often appearing in a transient manner. The reason for this is related to the patient’s lack of blood supply to the cerebral arteries prior to the stroke, which affects the function of the language center in the cerebral cortex. Swallowing and choking Some patients may have choking and coughing when eating or drinking before the attack, which is a manifestation of damage to the linguopharyngeal nerve after cerebral ischemia. Hemianesthesia Sudden onset of hemianesthesia, most prominent in the hand and foot area, can be ipsilateral limb weakness. These symptoms are caused by insufficient blood supply to one hemisphere of the brain, which affects the area of the brain that regulates limb activity.