元陽欲脫証(syndrome/pattern of collapse due to primordial yang deficiency),中醫証候名,屬虛陽外越証類,因外感或內傷耗損陽氣,致使元陽欲脫所致。臨床以面色蒼白,冷汗陣作,四肢厥冷,喘促氣短,精神萎頓,甚或昏蒙,舌質淡胖,脈微弱無力或結代數促,可伴見心胸絞痛或刺痛,二便失禁等為特徵的証候。[1]