Cerebrovascular Disease Knowledge Series: Stroke Aura Although cerebrovascular disease has a rapid onset, many patients have some early signs 1 to 2 days or hours before the onset of stroke, which are medically known as “stroke aura”. What are the precursors of cerebrovascular disease? What are they? 1. Suddenly, the mouth and eyes are distorted, the corners of the mouth salivate, speech is unclear, spitting difficulty, aphasia or language does not reach the meaning, swallowing difficulty, weakness or inflexibility of one limb, unstable walking or sudden fall. It is caused by insufficient blood supply and motor nerve dysfunction due to cerebrovascular disease. 2. Sudden onset of severe headache, dizziness, to nausea and vomiting. The form and sensation of dizziness is different from previous days, and the degree of dizziness increases, or changes from brief to persistent. These aura indicate waves in blood pressure, or brain dysfunction, and are precursors of cerebral hemorrhage or subarachnoid hemorrhage. 3. Numbness of the face, tongue, lips or limbs, also manifested as dizziness in front of the eyes or momentary inability to see, tinnitus or hearing changes. This is due to insufficient blood supply to the cerebral vessels and affects the sensory function of the brain. 4. Disorders of consciousness, manifested as mental depression, old desire to sleep or drowsiness throughout the day. The personality is also uncharacteristic, suddenly becoming silent, indifferent, slow in action or talkative, and some have transient loss of consciousness, which is also related to cerebral ischemia. 5. General fatigue and weakness, sweating, low fever, chest tightness, palpitations or sudden eruption, vomiting, etc., which are manifestations of vegetative nerve dysfunction. The above symptoms may not be manifested by every patient, but as long as there are aura symptoms, it is a stroke alarm for middle-aged and elderly people, so be especially alert. At this time, the patient should be kept quiet, rest in bed in time, avoid mental tension, move as little as possible, and preferably be treated in place. If necessary, the patient should be sent to the hospital with the patient lying flat.