There is no so-called “top ten syncope diseases”, but there are many diseases that can cause syncope, which can be categorized into nerve-mediated reflex syncope, postural syncope, cardiogenic syncope and other types of syncope, etc. 1. 1. Nerve-mediated reflex syncope: it refers to a variety of factors leading to different types of nerve reflexes, causing peripheral vasodilatation, leading to a decrease in arterial blood pressure and a decrease in blood perfusion to the whole brain, which triggers syncope. Common vasovagal syncope, situational syncope, carotid sinus syncope and so on. 2. Postural syncope: it refers to syncope triggered by changes in body position, such as fainting when standing up from a sitting position. It is mostly seen in simple autonomic dysfunction, multi-system atrophy, dysthymia, Parkinson’s disease without autonomic abnormality, dementia with Lewy bodies, and so on. 3. Cardiogenic syncope: it refers to the sudden drop of cardiac output due to various causes, which causes acute cerebral ischemia and induces syncope due to the drastic reduction of cerebral blood supply. Including arrhythmogenic syncope and syncope caused by organic cardiovascular diseases. 4. Other types of syncope: such as metabolic syncope, cerebral syncope, etc. Metabolic syncope usually refers to the syncope caused by blood abnormalities, such as hypoglycemia, severe anemia, and cerebral syncope usually refers to the syncope caused by transient and widespread ischemia of blood vessels supplying to the brain. If you have syncope symptoms, you need to go to the hospital as soon as possible, the doctor according to the specific cause of the disease, to develop individualized diagnosis and treatment plan, so as not to delay the condition.