What are the symptoms of cerebral infarction? Early cerebral infarction is often not easy to detect, but careful patients will still notice some symptoms, experts say that if cerebral infarction is not treated in time and allowed to develop, serious stroke and hemiplegia will occur. So, what are the symptoms of cerebral infarction? Here to listen to the introduction of experts. First, dizziness, sudden increase in headache or from intermittent headache to persistent severe headache. It is generally believed that headache and dizziness are mostly the aura of ischemic cerebral infarction, while severe headache with nausea and vomiting are mostly the aura of hemorrhagic cerebral infarction in the early symptoms of cerebral infarction. Second, transient visual impairment, manifested as blurred vision, or visual field defects, seeing things incomplete, this early symptom of cerebral infarction mostly recovers on its own within an hour, which is an early forecasting signal of cerebral infarction. Third, a transient black lemon, refers to normal people suddenly appear black in front of the eyes, can not see objects, a few seconds or a few minutes to return to normal, neither nausea, dizziness, nor any impairment of consciousness. This is due to transient retinal ischemia, suggesting intracranial hemodynamic changes or temporary blockage of retinal arteries by tiny blood clots, which is an alarm signal of early symptoms of cerebral infarction. IV. Somatic sensory and motor abnormalities, such as episodic unilateral limb numbness or weakness, loss of hand grip on objects, unexplained fainting or falling, unilateral facial palsy, which lasts for less than 24 hours. Follow-up observation shows that ischemic cerebral infarction occurs in about half of the people 3 to 5 years after the occurrence of such phenomena. Fifth, sleepiness and drowsiness, manifested as yawning after yawning is the reaction of cerebral hypoxia, especially the respiratory center hypoxia. With the aggravation of cerebral arteriosclerosis, the arterial lumen becomes narrower and narrower, and cerebral ischemia deteriorates severely; about 80% of people yawn frequently 5 to 10 days before the onset of ischemic cerebral infarction.