Question
What causes fainting?
Answer
Disease Analysis: The common mechanism of fainting is a temporary and widespread insufficient blood supply to the brain. The main causes include a decrease in cardiac output or cardiac arrest; a sudden and severe drop in blood pressure or a general temporary occlusion of cerebral blood vessels. Guidance: Other causes such as abnormalities in blood biochemistry and composition can also lead to fainting. It is recommended to undergo a comprehensive and systematic examination at a regular hospital to identify the cause early and receive timely treatment.