紫癜·阴虚火旺证(purpura with syndrome of exuberant fire due to yin deficiency)是指阴虚火旺,迫血妄行,以皮肤出现青紫癍点或瘀块,时发时止,伴鼻衄、齿衄或月经过多,颧红,心烦,口渴,手足心热,或有潮热,盗汗,舌红,苔少,脉细数等为常见症的紫癜证候。