卫气营血辨证
wèi qì yíng xuè biàn zhèng辨证体系
概述
Wei-Qi-Ying-Xue Differentiation is a diagnostic framework established by Qing dynasty physician Ye Tianshi for assessing exogenous warm-heat diseases (wen bing), delineating four progressive stages of pathogenic depth and severity. It guides treatment principles according to the layer affected, from superficial defense to deep blood level.
理论要点
- The system categorizes warm-heat disease progression into four layers: wei (defense), qi (qi), ying (nutritive), and xue (blood), reflecting increasing depth of pathogenic invasion.
- Wei-level syndrome indicates exterior invasion, marked by fever with mild aversion to cold, slight thirst, and a floating rapid pulse; treatment uses acrid-cool formulas to release the exterior.
- Qi-level syndrome signifies pathogenic heat entering the interior, presenting with high fever without chills, profuse sweating, thirst, and a large surging pulse; treatment focuses on clearing heat and generating fluids.
- Ying-level syndrome involves heat entering the nutritive layer, characterized by night-aggravated fever, irritability, insomnia, faint rashes, and a crimson tongue; treatment aims to clear the nutritive layer and vent heat outward.
- Xue-level syndrome denotes heat stirring blood and consuming yin, with manifestations such as bleeding, pronounced rashes, delirium, and convulsions; treatment employs cooling blood and dispersing stasis.
常见病机
- Progression typically follows a sequence from wei to qi, then ying, and finally xue, indicating escalating severity and deeper pathogenic involvement.
- Failure to resolve the exterior at the wei level allows heat to penetrate inward, transitioning to qi-level syndromes.
- At ying and xue levels, heat damages yin and disturbs the blood, potentially leading to life-threatening complications like hemorrhage or wind-stirring.
- The framework emphasizes that treatment must match the layer, with inappropriate therapy potentially driving the pathogen deeper.
日常调养
- During wei-level illness, rest and avoiding wind exposure are advised to support exterior resolution.
- At qi and deeper stages, maintaining hydration and consuming light, easily digestible foods help counter fluid loss from fever and sweating.
- General lifestyle measures include adequate sleep and stress reduction to support recovery from febrile illnesses.
传统医学科普内容，不替代执业医师诊疗。中文白话译文制作中，暂显示英文。