晕厥是儿科较常见的症状 ,经常有患儿以晕厥为主诉就诊。本文将就小儿晕厥的分类及相应概念作一阐述。1　晕厥的概念晕厥又称昏厥 ,是暂时性脑血流灌注减少或能量供应不足 ,导致脑缺氧或神经元能量代谢障碍而引起的临床症状 ,多见于青春期。特点为突然发生的一过性意识障碍 ,发 Syncope is a more common pediatric symptoms, often with children with syncope mainly complaints. This article will be on the classification of children with syncope and the corresponding concepts for an elaboration. The concept of syncope Syncope, also known as syncope, is a temporary decrease in cerebral perfusion or lack of energy supply, leading to cerebral hypoxia or neuronal energy metabolism caused by clinical symptoms, more common in adolescence. Characterized by sudden transient disturbance of consciousness, hair