The phenomenon of sudden fainting may be hypoglycemia, or it may be caused by myocardial infarction or cerebral infarction.
1. Hypoglycemia: due to endogenous overproduction of insulin or injection of insulin, excessive starvation, etc., the body’s glucose level drops sharply leading to neurological symptoms of glucose deficiency, which is a consequence of glucose depletion of neurons of the central nervous system. Symptoms include mental behavioral abnormality, convulsions, and alteration of consciousness, which is manifested as lethargy and blurring of consciousness in mild cases, and coma in severe cases.
2. Myocardial infarction: shock mostly occurs within hours to days after the onset of the disease, seen in about 20% of patients, mainly of cardiac origin, for myocardial necrosis of a wide range (more than 40%), due to a sharp drop in cardiac blood output.
3. Cerebral infarction: It is a syndrome of a group of diseases in which localized necrosis of brain tissue occurs due to lack of blood supply. It can be manifested as speech disorder, blurred vision, movement disorder, consciousness disorder, etc., and coma can occur in severe cases.
If the above symptoms occur, it is recommended to resuscitate and hospitalize the patient in time to avoid adverse consequences.