陰閉証(syndrome/pattern of yin obstruction),中醫証候名,屬閉証類,因年老氣衰,或秉質陽虛,陰寒痰濕互結,壅閉清空所致。臨床以突然昏仆,不省人事,牙關緊閉,口噤不開,喉中痰鳴,兩手握固,或腹痛,二便閉結,舌質暗或青紫,舌苔白膩,脈沉弦滑,伴見四肢不溫,面白、唇暗等為特徵的証候。[1]