液亏证(syndrome/pattern of humor depletion),属津液亏虚证类,因剧烈吐泻,或温热邪毒等耗损阴液所致。临床以形体消瘦,眼眶凹陷,口干、唇裂,烦渴引饮,皮肤干瘪,无汗,小便少或闭,大便干结,舌质偏红,舌干无津,脉细弱等为特征的证候。[1]