Cerebrovascular diseases are more or less known to people, and the onset of these diseases is usually very sudden and dangerous, and can easily lead to cerebral infarction, stroke and hemiplegia if not controlled by timely treatment. For example, smog, a relatively rare cerebrovascular disease, is very dangerous and should be treated actively to minimize the chance of cerebral infarction. So what exactly is smog? Many people have such doubts. In fact, the essence of smog is that the patient has narrowing or occlusion of the main branches of the cerebral artery ring bilaterally, and many compensatory abnormal vascular networks have proliferated at the base of the skull, which is called smog because of its resemblance to smoke. There are two clinical types of smog, ischemic and hemorrhagic. The main symptoms of smog include headache and dizziness, numbness and weakness of the limbs, sensory loss, mental retardation, vision loss, aphasia, acute hemiparesis, etc. Some patients may have sudden cerebral hemorrhage, which can be life-threatening if not controlled in time. Can I still recover from hemiplegia of cerebral infarction in smog disease? If the transient hemiplegia is caused by transient ischemic attack, it can usually recover slowly and spontaneously, and the recovery usually does not affect the normal function. However, if smog causes cerebral infarction and irreversible brain damage and brain necrosis, recovery is more difficult. In conclusion, it is important to go to a regular hospital to receive timely treatment for smog, and a series of clinical studies have shown that conservative medication alone for smog is not very meaningful, and only surgical treatment can achieve better results.