氣脫証(syndrome/pattern of qi collapse),中醫証候名,屬氣機失調証類,因外感或內傷等原因,致使真氣急驟外泄所致。臨床以突然面色蒼白,口唇青紫,汗出,肢冷,呼吸微弱,舌質淡,脈細數等為特徵的証候。[1]