Mr. Xu’s weakness, headache, and vomiting are all due to brain hemorrhage caused by smog, and the incidence of smog has increased gradually over the years. The results. Mr. Xu, 48, had been in good health, but recently he suddenly experienced weakness in his arms and legs, but soon afterwards he was able to return to normal, and the unusual condition lasted for more than a month, until one day last month he had a sudden headache for more than 3 hours and was sent to the hospital by his family for vomiting, which are actually typical symptoms of smog. Mr. Xu’s weakness, headache and vomiting were all caused by brain hemorrhage caused by smog. Over the years, the incidence of smog has gradually increased, and according to the lowest incidence rate in the United States, there are nearly 200 new smog patients in Guangzhou every year. The symptoms are not specific and can be easily confused with other diseases, resulting in a high rate of misdiagnosis, which affects the ultimate treatment. Children and young adults need to be aware of smog disease Smog disease was first discovered in Japan in 1957, and it was called “smog disease” because of the appearance of dilated cerebral blood vessels on angiography, which resembles smoke coming out of a chimney. The incidence in Asia is much higher than in Europe and the United States, especially in Japan, and is also high in Korea, South Korea, and China, with a slightly higher incidence in women than in men, in a ratio of 2:1. When smoker’s disease occurs, the major blood vessels in the brain become narrowed or even blocked for various reasons that are difficult to identify, and numerous capillaries grow in their place, looking like a cloud of smoke tangled in the brain on angiography. The onset of smog is divided into two peak periods: one is during the age of 10, when the main symptoms are mainly cerebral ischemia; the other is in people around 30-40 years old, when the disease mostly starts with acute intracranial hemorrhage. Young and middle-aged people with smoldering disease are prone to combined aneurysm The symptoms of this disease are mainly manifested by two types of cerebral ischemia caused by occlusion of the internal carotid artery (63.4%) and cerebral hemorrhage induced by rupture of compensatory dilated smoldering vessels (21.6%). For children, who account for the main cerebral ischemia, if they do not receive timely treatment, it will affect the cognitive function of the affected children, especially in terms of intellectual memory, executive function, and quality of life. According to the literature, about 1/4 of pediatric patients will develop intellectual or motor dysfunction. In adult patients, due to the structural inadequacy of the walls of the smoldering neovascularization and even the presence of aneurysms, they are prone to sudden rupture and bleeding, causing intracerebral hematoma, intraventricular hematoma, and subarachnoid hemorrhage. Adult patients, especially women, are more likely than pediatric patients to develop cerebral hemorrhage, which can damage cerebral nerve tissue, stimulate vascular contracture, induce cerebral edema, coma, epilepsy, and secondary hydrocephalus, resulting in disability or death of the patient. The symptoms of smoker’s disease are not obvious, so it is easy to ignore or misdiagnose the disease. If there are symptoms such as unexplained slurred speech, impaired movement of the arms and legs, frequent walking and falling, or jerking and headache, we should be highly suspicious, especially in children. Consider whether your child has a medical condition. Although smog is difficult to distinguish in daily life, there is a “gold standard” for diagnosis. Usually, patients should have a CT scan followed by a non-invasive magnetic resonance angiography (MRA), and then an invasive angiography if the diagnosis is further confirmed. The treatment of smog disease is mainly surgical. For the treatment of smog disease, medication is not effective, and the majority of patients with progressive and severe disease have to undergo surgical revascularization. There is a consensus at home and abroad that surgery is the treatment of choice. The problem of smoker’s disease lies in the inadequate blood supply to the intracerebral arteries, and the risk of cerebral ischemia and cerebral hemorrhage needs to be reduced by establishing a pathway for blood supply from normal vessels outside the brain to the brain to improve intracerebral blood flow.” Cerebral revascularization surgery includes direct vascular bypass surgery, indirect vascular bypass surgery and combined surgical treatment. This involves taking a blood vessel from the scalp and connecting it to a large artery in the brain to “supply blood” to the ischemic brain. It may seem simple, but it is very difficult to perform and requires a high level of medical team and equipment. In general, patients with ischemia as the main symptom can achieve 80% improvement after surgery, and patients with bleeding as the main symptom can reduce the risk of bleeding by about 50%. For post-operative patients, they must abstain from alcohol, strenuous exercise, karaoke in a closed environment, and prolonged online games.