Being sick is a very painful thing for people, not only do they suffer physically, but they also suffer a lot of psychological pressure, especially when some diseases are not so curable, which makes people even more worried and afraid. For example, smog disease, which is a cerebrovascular disease, is relatively rare in medicine, even some grass-roots medical personnel have never heard of this disease. Smoky brain disease is also called cerebrovascular malformation disease, mainly because the patient’s main arteries at the base of the brain have been narrowed or occluded phenomenon, and then compensated for the emergence of some newborn abnormal small blood vessels, which will have a great impact on the blood supply to the brain. Moreover, smog disease is a chronic progressive disease, its course is divided into six stages, so what are the various manifestations of smog disease grades 1 to 6? Stage 1 is the stenosis of the end of the internal carotid artery, the patient will not have any obvious physical manifestations; stage 2 is the formation of smoky blood vessels, the patient will have some transient symptoms of cerebral ischemia, such as headache and dizziness, etc.; stage 3 is the internal carotid artery system is further narrowed or occluded, and gradually involve the middle cerebral artery, the anterior cerebral artery; the increase in smoky blood vessels, the smoky blood vessels will be very obvious, and cerebral ischemia symptoms will recur; stage 4 is the increase of smoky blood vessels, the smoky blood vessels will be very obvious, and cerebral ischemic symptoms will recur. The smoke vessels will increase, and the symptoms of cerebral ischemia will recur; stage 4 is the attenuation of smoke vessels, and there will be the gradual formation of collateral circulation from the extracranial to the intracranial; stage 5 is the reduction of smoke vessels, and there will be fewer smoke vessels, and the branches of cerebral arterial rings and even posterior cerebral arteries will be gradually occluded, and the external carotid arterial system will carry out compensatory blood supply, and there will be the risk of cerebral infarction; stage 6 is the complete occlusion of the internal carotid arterial system, and the disappearance of smoke vessels, which means that all smoke vessels will disappear, and all of them will be completely relieved. In other words, the smoky blood vessels will disappear and rely on the external carotid arteries to compensate for the blood supply. Smoke is a great threat to health, but the early stage of the disease is milder and easier to control, so patients should actively deal with it.