Common causes of syncope in children

Syncope is a temporary loss of consciousness state caused by the transient cerebral insufficiency,often accompanied by decreased muscle tone and failure in maintaining a certain position. Syncope is a common clinical disease of children,the causes of which include nerve-mediated (reflex) syncope,cerebral vascular disease syncope, psychogenic syncope, cardiac syncope, metabolic syncope, unexplained syncope,etc. Nerve-mediated syncope is the most common cause, and vasovagal syncope is the most common type. Al-though the incidence of cardiogenic syncope is low, but its onset is abrupt and dangerous, which should be payed attention. Key words: Syncope;  Etiology;  Children