Most people are probably unfamiliar with, or have never even heard of, smog. It is a relatively rare disease that was first discovered in Japan in the 1960s and later in other countries around the world. The Japanese named the disease smog because when a cerebral angiogram is done, the patient’s cerebral blood vessels look like smoke exhaled from a cigarette, hence the name smog. So don’t take it for granted that it’s a smoking-related lung disease or something, it’s a cerebrovascular disease. The age of onset of the disease is bimodal, with the onset mainly in children under 10 years of age and adults around 40 years of age. Most children with smog have ischemic-type symptoms, so what are the symptoms of adult smog like? In adults, both ischemic and hemorrhagic symptoms are present in roughly equal proportions. Ischemic symptoms include headache, dizziness, weakness of the limbs, numbness, speech impairment, blurred vision, visual field loss, etc. The symptoms of hemorrhagic symptoms are usually more intense, with severe headache, dizziness, impaired movement of the limbs, and fainting on the spot if there is a lot of bleeding. Therefore, smog is a very dangerous disease and should be treated promptly. Currently, the most advanced and effective treatment for smog is combined vascular bypass surgery. Combined vascular bypass surgery is a dual procedure of direct bypass + patching, based on direct bypass and patching at the same time, the two procedures are done in the same surgery, which can improve the patient’s cerebral blood supply in a double-pronged way and achieve a more ideal treatment effect, while avoiding repeated surgeries and unnecessary trauma and pain.