Possible causes of transient syncope include postural hypotension, hypoglycemia, cardiogenic diseases, neurological diseases and so on. 1. Postural hypotension refers to a sudden change of body position (such as suddenly getting up) resulting in insufficient blood supply to the brain leading to transient syncope, which can be relieved by resting. 2. Hypoglycemia may also cause transient syncope, when blood sugar is particularly low, it is not enough to maintain the body’s energy supply, resulting in insufficient cerebral blood supply and oxygenation, and it is necessary to give high sugar to supplement energy. 3. Cardiogenic diseases: such as acute myocardial infarction, the pain is unbearable, may also lead to transient syncope, we should go to the hospital in time to consult the doctor, drug treatment, thrombolysis or emergency treatment. 4. Neurological diseases: such as transient ischemic attack, epilepsy, etc. can cause transient syncope, clear cause and symptomatic treatment. If you have transient syncope, you should pay attention to it and go to the hospital in time to avoid missing the chance of treatment.