熱入血分証(syndrome/pattern of heat entering the blood phase),中醫証候名,屬熱在營血証類,因溫熱邪毒深入血分,迫血妄行所致。臨床以溫熱外感病過程中出現咳血或吐血、衄血、尿血、便血,斑疹密布,色紫或黑,舌質深絳或起刺,脈數,伴見身熱、口渴,心煩、不寐等為特徵的証候。[1]