《伤寒论》 大便异常 虚寒下利 实热下利 表热里寒下利 蓄血下利 阳郁下利 张仲景 Treatise on Cold Damage Diseases abnormal stool diarrhea due to asthenia cold diarrhea due to sthenia heat diarrhea due to hot exterior and cold interior diarrhea due to blood stasis diarrhea due to yang stagnation Zhang Zhong-jing