火毒内闭证(syndrome/pattern of fire toxin blocking the internal),证候类术语,属火毒内攻证类,因火热邪毒炽盛,内闭脏腑气机所致。临床以持续高热,体温骤降,身体灼热,四肢厥冷,气粗、口臭,舌质红绛,舌苔黄褐而干,脉弦滑数,伴见神昏、谵妄,躁动,或循衣摸床,撮空理线等为特征的证候。[1]