Cerebral infarction is an ischemic necrosis or softening of limited brain tissue due to impaired blood circulation, ischemia and hypoxia in the brain, and the clinical symptoms are complex. Clinical manifestations depend on the size and location of the infarct foci, blood supply vessels, etc., and can be divided into three categories: 1. Typical manifestations: cerebral infarction can start suddenly or progress slowly and worsen, and the main symptoms are weakness and numbness of one limb, distorted mouth and tongue, slurred speech or incomprehension of others’ speech, etc. These symptoms are more common manifestations of cerebral infarction and can be recognized by the general public, mainly due to the internal carotid artery system （These symptoms are more common manifestations of cerebral infarction, which are generally recognized by people, and are mainly caused by problems with the internal carotid artery system (anterior circulation). 2.Atypical manifestations: Some other patients show symptoms of dizziness, which can be a sense of spinning, or just a sense of dizziness, double shadows in vision, difficulty in swallowing or choking on water, or atypical manifestations such as skewing to one side, hitting the door frame when walking, or pain in the deviated body, or limb shaking, etc., which are actually some special parts of cerebral infarction, and this type of infarction is atypical, so ordinary people cannot see it and are easy to This type of infarction is atypical, which cannot be seen by ordinary people and is easy to be ignored, and often the condition is more likely to change, commonly in the lesions of the vertebrobasilar system (posterior circulation). 3.Critical manifestations: If the area of cerebral infarction is large or the key part of cerebral infarction occurs, it will lead to confusion, high fever, gastrointestinal bleeding, seizure or even coma, and may also involve the respiratory circulation center to endanger the life of the patient, this type indicates a serious condition, and if the degree of impaired consciousness gradually increases, it indicates the progress of the disease, and emergency medical treatment or rescue treatment should be sought, and the lesions of the anterior and posterior circulation in this case Both anterior and posterior circulatory lesions can occur. Therefore, there are various symptoms of cerebral infarction, and if one or more of the above manifestations appear, you should be highly alert to the presence of cerebral infarction, and you should seek timely medical treatment to seek professional diagnosis and treatment.