Smog is a cerebrovascular disease that results from the narrowing or occlusion of major arteries in the brain, which in turn leads to the formation of an abnormal vascular network at the base of the skull. It is called smog because it appears as a cloud of smoke on cerebral angiography. Smog can cause cerebral ischemia, cerebral infarction, cerebral hemorrhage, etc. The symptoms can take various forms. Some patients ask, “Do the early symptoms of smog cause the corners of the mouth to become wooden? This is entirely possible. Smoke disease causes cerebral ischemia or even cerebral infarction due to the narrowing and occlusion of cerebral blood vessels, which can involve various functional areas of the brain, and if a part of the body’s sensory function area is damaged, it can lead to dullness or even loss of sensation in specific parts of the body and numbness. In addition to this kind of numbness at the corners of the mouth, early symptoms of smog can include headache, dizziness, nausea, vomiting, etc. Some patients may have different degrees of impaired consciousness, and may show different degrees of diminished intelligence, sensory loss, dysphonia, aphasia, migraine, headache, and brain nerve damage. Severe cases may also cause intracranial hemorrhage, acute hemiplegia, or even disability and death. Therefore, once you suffer from smog, you must pay attention to it and go to a regular hospital for treatment in time. At present, for the treatment of smog, the medical profession recognizes that conservative treatment is of little significance, and surgery should be performed as soon as the diagnosis is clear. In terms of surgery, the most advanced and effective procedure is the combined vascular bypass surgery of direct bypass + patching, which can complete good blood flow reconstruction for patients with good clinical effect through the combined use of two procedures.