内经曰肠 下血身热则死寒则生肠 下白沫脉沉则生浮则死仲景云下痢脉滑而数者有宿
食也当下之脉诀云痢下宣肠急痛时浮大之脉归泉路
小儿八痢者乃饥饱劳役风惊暑湿因触冒天地八风之邪而得故以命名也大抵多由脾胃不和
饮食
过度停积于脾胃不能克化又为风寒暑湿之气干之故为此疾伤热则赤伤冷则白伤风则纯下清血
伤湿则下如豆汁冷热交并赤白兼下若下迫后重里急窘迫急痛者火性急速而能燥物故也或夏末
秋初忽有暴寒折于盛热无所发散客搏肌肤之中发于外则为疟发于内则为痢内外俱发则为疟痢
凡痢久则令肿满下焦偏冷上焦热结则为上实下虚若脾胃湿热之毒熏蒸清道而上以致胃口闭塞
而禁口之证又有一方一家之内上下传染长幼相似是疫毒痢也当先推其岁运以平其外察其郁结
以调其内审其所伤别其虚实冷热以治之条然明白不致妄投也
病机式要云后重则宜下腹痛则宜和身重则除湿脉弦则去风脓血稠粘以重剂竭之身冷自汗
以毒药
温之风邪内缩宜汗之鸭溏为痢当温之又云在外者发之在里者下之在上者涌之在下者竭之身表
热者内疏之小便涩者分利之又曰盛者利之去者送之至者止之兵法曰避其锐气击其堕归此之谓
也秘藏云假令伤寒冷之物胀满而传飧泄者宜温热之剂以消导之伤湿热之物而成脓血者宜苦寒
之剂以内疏之风邪下陷者升举之湿气内胜者分利之里急者下之后重者调之腹痛者和之洞泻腹
鸣无力不及拈衣其脉细而弱者温之脓血稠粘至圊而不能便其脉洪大而有力者寒之下之
按人之饮食过伤恣食辛热寒冷之物皆能致伤肠胃肠胃一伤不能运化传送遂蓄停滞而为痢
经曰
饮食不节起居不时者阴受之阴受之则入五脏 满闭塞不为飧泄久为肠 是也治法当先化食毒
或可攻伐然后随寒热温凉以调之
《黄帝内经》说:痢疾下血,若身体发热则预后不良(死证),若体温正常或偏低则预后良好(生证);痢疾下白沫,脉象沉伏则预后良好,脉象浮大则预后不良。张仲景说:痢疾脉象滑而数,是有宿食停滞,应当用攻下法治疗。《脉诀》说:痢疾伴有肠急疼痛,若出现浮大的脉象,是元气将脱、濒临死亡的征兆(归泉路)。
小儿的“八痢”,是由于饥饱失常、劳累过度,以及感受风、惊、暑、湿等邪气,触犯了天地间八方之邪所致,因此以此命名。大体上多由脾胃不和,饮食过量,停积在脾胃中不能消化,再加上风寒暑湿之气侵犯,从而引发此病。伤于热邪则便赤色脓血,伤于冷邪则便白色粘液,伤于风邪则纯下清血,伤于湿邪则便如豆汁状。若冷热交杂,则赤白兼下。如果伴有里急后重、腹部拘急窘迫、剧烈疼痛,这是因为火性急速且能燥物所致。或者夏末秋初,突然遭遇暴寒遏制盛热,邪气无处发散,客居于肌肤之中,发于体表则为疟疾,发于体内则为痢疾,内外同时发作则为疟痢。凡是痢疾日久,会导致腹胀满;下焦偏冷、上焦热结,则形成上实下虚之证;若是脾胃湿热毒邪熏蒸,向上侵蚀清道,导致胃口闭塞,则出现“禁口痢”(无法进食)的证候。还有一种情况是一方一家之内,上下相互传染,长幼症状相似,这是疫毒痢。治疗时应当先推求当年的岁运以平衡外邪,观察郁结以调理内部,审察所伤的病因,辨别虚实冷热以进行治疗,条理清晰明白,不至于误投药物。
《病机式要》说:里急后重适宜用攻下法,腹痛适宜调和气血,身体沉重适宜祛除湿邪,脉弦适宜祛风,脓血稠粘需用重剂竭除,身体寒冷自汗需用毒药温补,风邪内缩适宜发汗,鸭溏样痢疾适宜温补。又说:病邪在表者宜发散,在里者宜攻下,在上者宜涌吐,在下者宜竭除。体表发热者宜从内部疏解,小便涩滞者宜分利水道。又说:实证宜通利,虚证宜固摄,邪气盛者宜祛除,正气至者宜止涩。兵法说:避开敌人锐气,攻击其疲惫退却之时,就是这个道理。《兰室秘藏》说:假如因损伤寒冷食物导致胀满并转为飧泄(完谷不化),适宜用温热剂来消导;因损伤湿热食物而成脓血者,适宜用苦寒剂来内部疏解;风邪下陷者宜升举,湿气内盛者宜分利;里急者宜攻下,后重者宜调气,腹痛者宜和中,洞泻腹鸣、无力及衣、脉细弱者宜温补;脓血稠粘、欲便而不能、脉洪大而有力者,宜用寒凉攻下法。
按人之饮食过伤,恣意食用辛热或寒冷之物,都会损伤肠胃。肠胃一旦受伤,不能运化传送,于是蓄积停滞而成为痢疾。《内经》说:“饮食不节,起居不时,阴气受之。阴气受之则入五脏,五脏满闭塞,不为飧泄,久为肠澼。”说的就是这种情况。治疗方法应当先化解食毒,或者可以攻伐,然后随寒热温凉之性进行调理。
The *Huangdi Neijing* (Yellow Emperor's Inner Canon) states: In dysentery with bloody stools, if the body is hot, the prognosis is poor (death); if the body temperature is normal or low, the prognosis is good (survival). In dysentery with white mucus, a deep pulse (Chen Mai) indicates a good prognosis, while a floating pulse (Fu Mai) indicates a poor prognosis. Zhang Zhongjing stated: In dysentery, if the pulse is slippery and rapid (Hua Shuo), it indicates retained food stagnation, and purgative therapy should be applied. The *Mai Jue* (Pulse Classic) states: In dysentery accompanied by intestinal urgency and pain, if a floating and large pulse appears, it signifies the depletion of vital qi and impending death (returning to the spring path).
The "Eight Dysenteries" in children arise from irregular eating and drinking, overexertion, and exposure to wind, fright, summerheat, and dampness, having touched the evil qi of the eight directions of heaven and earth; hence the name. Generally, this disease stems from disharmony of the Spleen and Stomach, excessive intake of food that accumulates in the Spleen and Stomach and cannot be transformed and transported, compounded by invasion of wind-cold, summerheat, and dampness. Injury by heat leads to red pus and blood in stool; injury by cold leads to white mucus; injury by wind leads to pure clear blood; injury by dampness leads to stool resembling bean dregs. If cold and heat mix, red and white discharge occurs together. If there is tenesmus (Li Ji Hou Zhong), abdominal urgency and distress, and acute pain, this is due to the fiery nature being rapid and drying. Alternatively, at the end of summer or beginning of autumn, sudden cold may suppress intense heat. With nowhere for the pathogen to dissipate, it lodges in the skin and muscles. Manifesting externally, it becomes Malaria (Nüe); manifesting internally, it becomes Dysentery (Li); manifesting both internally and externally, it becomes Malaria-Dysentery. Chronic dysentery can lead to abdominal distension and fullness. Cold in the Lower Jiao combined with heat accumulation in the Upper Jiao results in excess above and deficiency below. If toxic damp-heat from the Spleen and Stomach steams upward, invading the clear pathways, causing closure of the stomach opening, it results in "Forbidden Mouth Dysentery" (Jin Kou Li), where the patient cannot eat. Another type is Epidemic Toxic Dysentery (Yi Du Li), where infection spreads within a household, affecting all ages similarly. Treatment requires first analyzing the annual climate cycle to balance external pathogens, observing stagnation to regulate internal conditions, examining the cause of injury, and distinguishing deficiency/excess and cold/heat to guide therapy, ensuring clarity and avoiding erroneous prescriptions.
*Bing Ji Shi Yao* (Essentials of Pathogenesis) states: Tenesmus is suitable for purgation; abdominal pain is suitable for harmonization; heaviness of the body is suitable for removing dampness; a wiry pulse is suitable for dispelling wind; thick and sticky pus and blood require heavy agents to exhaust them; cold body with spontaneous sweating requires toxic drugs to warm; internal contraction of wind evil requires diaphoresis; duck-dung-like loose stools require warming. It also states: Pathogens on the exterior are treated by dispersing; those in the interior by purging; those high up by emesis; those low down by exhausting. External heat is treated by internal clearing; urinary difficulty by separating and draining. Furthermore: Excess is drained; deficiency is guided; arrival (of pathogen) is stopped; departure (of pathogen) is sent away. As military strategy says: Avoid their sharp energy, strike when they are retreating and exhausted. This is what is meant. *Lan Shi Mi Zang* (Secrets of the Cabinet of the Orchid Chamber) states: If injury from cold food causes distension progressing to undigested stool (Sun Xie), warm and acrid agents should be used to digest and guide out. If injury from damp-heat food results in pus and blood, bitter and cold agents should be used to clear internally. Wind evil sinking downward requires lifting and raising; internal dominance of dampness requires separation and drainage. Urgency requires purging; tenesmus requires regulating Qi; abdominal pain requires harmonizing; torrential diarrhea with borborygmus, weakness, inability to lift clothes, and a fine, weak pulse requires warming. Thick, sticky pus and blood, inability to defecate despite urge, and a surging, forceful pulse require cold purgation.
Regarding dietary injury, indulging in pungent-hot or cold foods damages the intestines and stomach. Once damaged, they fail to transform and transport, leading to accumulation and stagnation, resulting in dysentery. The *Neijing* states: "Irregular diet and improper daily routine injure the Yin. When Yin is injured, it enters the five zang organs. Fullness and blockage in the zang organs do not result in undigested stool, but over time become Chang Pi (intestinal disorder/dysentery)." This is exactly what is described. Treatment methods should first resolve food toxicity, possibly using purgation, and then regulate according to cold, heat, warmth, and coolness.