How many types of smoker’s disease are there? Smoker’s disease is a rare cerebrovascular disease characterized by unilateral or bilateral chronic progressive stenosis or occlusion of the terminal internal carotid artery and the anterior and middle cerebral arteries, and secondary to the formation of an abnormal vascular network at the base of the skull. The types of smog disease are clinically classified as hemorrhagic and ischemic, in which most children present with ischemic symptoms and adults may present with ischemia, hemorrhage, or both. Half of the patients with adult smog disease develop intracranial hemorrhage, and the incidence of the hemorrhagic type is higher compared with the ischemic type, and patients have a high rate of disability and mortality. Hemorrhagic smog Patients with hemorrhagic smog usually do not have any symptoms and look normal when they do not develop the disease, but once the disease develops, they quickly fall into a coma, and only when they go to the hospital is a brain hemorrhage due to smog discovered. It turns out that due to the formation of smoke-like blood vessels at the base of the skull, the walls are thin and very fragile, and when there is a rupture, it can cause a serious risk of brain hemorrhage. It has also been found that 12% to 14% of patients can have subarachnoid hemorrhage, intraventricular hemorrhage, or intracerebral hemorrhage, and some patients may even have recurrent hemorrhages. Smoke disease of ischemic type Patients with smoke disease of ischemic type are suffering from narrowing and occlusion of the main cerebral arteries, which causes insufficient blood supply to the brain, thus causing symptoms such as dizziness and headache, nausea, vomiting, numbness and weakness of the limbs, hemiparesis on one side, loss of vision, etc. More serious cases may suffer from impaired consciousness and unconsciousness. In fact, whether it is bleeding type of smog or ischemic type of smog, experts in the medical field today clearly point out that it is now possible to cure it through surgery. The combined vascular bypass surgery, which is the first of its kind in our clinic, can re-establish sufficient blood channels for the brain from both the main cerebral artery and the skull base vascular network, which can meet the blood supply needs of the brain to a greater extent and greatly improve a series of symptoms caused by cerebral hemorrhage and cerebral ischemia in smog, with remarkable effects.