Cerebrovascular disease is a serious threat to human health and is usually more prevalent in the middle-aged and elderly than in others. As a rare cerebrovascular disease, smog disease is widely known to the public, but its pathogenesis and symptoms are not well understood. What are the early signs and symptoms of cerebrovascular smog disease? Definition of smoker’s disease Smoker’s disease, also known as moyamoya disease, is caused by chronic progressive narrowing or occlusion of the major arteries of the brain (the siphon segment of the internal carotid artery, the anterior cerebral artery, the middle cerebral artery, and sometimes the beginning of the posterior cerebral artery), followed by the formation of an abnormal vascular network at the base of the skull. These abnormal vascular networks appear as a cloud of smoke on cerebral angiography, hence the name smog. Although this disease is less common, it is taken seriously by doctors and patients because of the significant health and safety risks it poses. Early symptoms and signs of smoky disease Early symptoms of smoky patients need to be judged according to the actual situation and cerebral angiography. Some patients do not have any clinical symptoms in the early stage and are detected only when they do the experience; others may occasionally have a little dizziness, headache and so on, which usually will be relieved soon, so the patient does not care much. When the condition is a little more severe, it may manifest as transient limb numbness and weakness, speech dysfunction, epileptic convulsions, etc. Some patients may also suffer from cerebral hemorrhage, and those with severe cases may die. Therefore, it is important to treat smog with caution, and it is recommended to actively go to the hospital for examination when the above symptoms appear. Combined vascular bypass surgery is currently being carried out to treat patients with smog, and satisfactory results have been achieved.