Patient: My father has smog disease (detected in a Korean hospital about 10 days ago), which also caused a slight brain hemorrhage (currently in good health), and the hospital (Korea) said it is better to have surgery after 3-4 months, can you tell us about this disease, please! Neurosurgery Department of Shanghai Hospital: Smoke disease is highly prevalent in Asia and most common in Japan. With the increasing popularity of diagnostic techniques for cerebrovascular diseases in China, such as cerebral angiography, the detection rate of smog disease has a tendency to increase, and in the cerebrovascular center of Tongji Hospital, for example, the detection rate of smog disease is increasing by 3% every year. The clinical manifestation of smog disease is ischemia or hemorrhage. It occurs in children and young people, and is relatively rare in the elderly. Treatment is based on cerebral angiography and disease staging, as well as on the compensatory capacity of the collateral circulation. Intracranial and external arterial bypass surgery and temporal muscle patching may be effective in some patients, depending on the indication for the procedure. It should also be noted that smoker’s disease requires extra attention if accompanied by an aneurysm, the chances of rebleeding are greatly increased, and the rates of death and disability are quite high. Careful angiography is recommended to determine the treatment plan after analysis.