凡病伤寒瘟疫,脉洪大滑数,而数中兼缓者,可治。脉洪大而紧数甚者,危。脉虽浮大
而按之无力者,宜补兼表。身虽热而脉弱者,当以纯补为主,或兼温散。身大热而脉见沉涩
细小,足冷者,难治。瘟病四五日,身热,腹满而吐,脉来细而弦强者,十二日死。瘟病二
三日,头痛腹满,脉直而疾者,八日死。瘟病八九日,头身不痛,色不变,而利不止,心下
坚,脉不鼓,时或大者,十七日死。瘟病汗不出,或出不至下部者,死。瘟病下痢,腹中痛
甚者死。以上死证,言其略耳,诸所未尽,当于伤寒门参阅。
自古伤寒治法,苦于浩渺。余自考索以来,留心既久,每临编得其法,未必见其病,临
病见其证,未必合其方,可见病多变态,执滞难行,惟贵圆通而知其要耳。故余注《类经》
,所列伤寒治要有六∶曰汗、补、温、清、吐、下。然亦但言其概,而未及其详,今悉诸
法于此,用补伤寒之未备者。倘欲求仲景心法,乃当阅伤寒本门,使能彼此参证,则纲举目
张,自有包罗贯串之妙。既约且尽,而活人之要,当无出此。
治伤寒之法,余已析其六要。而六要之外,又有五忌者,何也?盖六法之中,惟汗为主
,正以伤寒之愈,未有不从汗解者,故法虽有六,汗实统之。而汗外五法,亦无非取汗之法
也。然取汗以辛散,此固其常也,而何以五法皆能取汗?六要则已,又何以有五忌之辨也?盖
汗由液化,其出自阳,其源自阴。若肌肤闭密,营卫不行,非用辛散,则玄府不开而汗不出
,此其一也。又若火邪内燔,血干液涸,非用清凉,则阴气不滋而汗不出,此其二也。又若
阴邪固闭,阳气不达,非用辛温,则凝结不开而汗不出,此其三也。又若营卫不足,根本内
亏,非用峻补,则血气不充而汗不出,此其四也。又若邪在上焦,隔遮阳道,不施吐涌,则
清气不升而汗不出,此其五也。又若邪入阳明,胃气壅滞,不以通下,则浊气不解而汗不出
,此其六也。凡此者皆取汗之道,是即所谓六要也。
何谓五忌?盖一曰热在表者,内非实火,大忌寒凉,寒则阴邪凝滞不散,邪必日深,阳
必日败,而汗不得出者死。二曰元气本弱,正不胜邪者,大忌消耗,尤忌畏补,消耗则正
气日消,不补则邪气日强,消者日清,甚者日甚,而必不能汗者死。三曰实邪内结,伏火
内炎者,大忌温补,温则愈燥,补则愈坚,而汗不得出者死。四曰中虚气弱,并忌汗诸条
者,大忌发散,散则气脱,气脱而汗不能出,气脱而汗不能收者死。五曰病非阳明实邪,
并忌下诸条者,大忌通泻,泻则亡阴,阴虚则阳邪深陷,而汗不得出者,死。是即所谓五忌
也。能知六要而避五忌,伤寒治法尽于是矣。第假热者多,真实者少,能察秋毫于疑似,非
有过人之见者不能也。余之谆谆,其亦 望于潜心者耳。
For all patients suffering from Shanghan (Cold Damage) or plague, if the pulse is surging (Hong), large, slippery, and rapid, yet with a moderate/slack quality within the rapidness, it is treatable. If the pulse is surging and large, but extremely tight and rapid, the condition is critical. If the pulse appears floating and large but is powerless upon deep palpation, tonification combined with exterior-releasing should be used. If the body is hot but the pulse is weak, pure tonification should be primarily employed, or combined with warming and dispersing methods. If the body is highly febrile, yet the pulse is deep, choppy, fine, and small, accompanied by cold feet, the condition is difficult to treat. In plague cases lasting four to five days, if there is fever, abdominal fullness with vomiting, and the pulse is fine, wiry, and strong, death will occur in twelve days. In plague cases of two to three days, if there is headache and abdominal fullness, and the pulse is straight and rapid, death will occur in eight days. In plague cases of eight to nine days, if there is no pain in the head or body, the complexion remains unchanged, but diarrhea persists unceasingly, the epigastrium is hard, the pulse does not beat vigorously, and occasionally becomes large, death will occur in seventeen days. If plague patients do not sweat, or if sweating does not reach the lower limbs, death will ensue. If plague patients suffer from dysentery with severe abdominal pain, death will ensue. The above fatal signs are merely a general overview; for all未尽 details, refer to the Shanghan section.
Since ancient times, treatment methods for Shanghan have been criticized for being vast and profound. Since my own research and exploration, having paid close attention for a long time, I find that when compiling methods, one may not encounter the corresponding disease; when facing a disease and seeing its manifestations, one may not find a matching formula. This shows that diseases have many variations, and rigid adherence is difficult to implement; only flexibility and grasping the essentials are valuable. Therefore, in my commentary on *Lei Jing* (Classified Classic), I listed six essential principles for treating Shanghan: Sweating (Han), Tonifying (Bu), Warming (Wen), Clearing (Qing), Vomiting (Tu), and Purgation (Xia). However, these were only mentioned in general terms without detail. Now, I present all these methods here to supplement the deficiencies in Shanghan treatment. If one wishes to seek the core methods of Zhang Zhongjing, one should read the original Shanghan texts. By cross-referencing both, one can achieve clarity where the main points govern the details, naturally attaining the wonder of comprehensive integration. Being both concise and exhaustive, the key to saving lives lies nowhere else than this.
Regarding the treatment of Shanghan, I have already analyzed the Six Essentials. Beyond these six essentials, there are Five Taboos. Why? Among the six methods, Sweating is primary, because recovery from Shanghan invariably occurs through sweating. Thus, although there are six methods, Sweating essentially encompasses them. The other five methods outside of Sweating are also essentially methods to induce sweating. However, inducing sweating relies on acrid dispersal, which is the normal approach. Why can all five methods induce sweating? Given the Six Essentials, why distinguish Five Taboos? Sweat is formed from body fluids, emerging from Yang, originating from Yin. If the skin and muscles are closed and dense, and Ying (Nutritive) and Wei (Defensive) Qi do not circulate, without acrid dispersal, the Xuanku (sweat pores) will not open, and sweat will not come out; this is the first case. Furthermore, if fire pathogen burns internally, causing blood dryness and fluid depletion, without cooling agents, Yin Qi cannot nourish, and sweat will not come out; this is the second case. Furthermore, if Yin pathogen is firmly closed, preventing Yang Qi from reaching, without acrid-warming agents, condensation will not disperse, and sweat will not come out; this is the third case. Furthermore, if Ying and Wei are insufficient, and the root is internally deficient, without potent tonification, Blood and Qi will not be充盈 (full), and sweat will not come out; this is the fourth case. Furthermore, if pathogen is in the Upper Jiao, blocking the pathway of clear Qi, without emetic methods, clear Qi will not ascend, and sweat will not come out; this is the fifth case. Furthermore, if pathogen enters the Yangming, causing stomach Qi stagnation, without purgative methods, turbid Qi will not resolve, and sweat will not come out; this is the sixth case. All these are ways to induce sweating, which constitutes the so-called Six Essentials.
What are the Five Taboos? First, when heat is in the exterior, and there is no excess fire internally, cold-cooling agents are strictly taboo. Cold causes Yin pathogen to stagnate and not disperse, leading to deeper pathogen penetration and daily decline of Yang Qi; failure to sweat results in death. Second, when Yuan Qi (Original Qi) is inherently weak and Zheng Qi (Upright Qi) cannot overcome the pathogen, agents that consume Qi are strictly taboo, especially fear of using tonification. Consumption leads to daily decline of Zheng Qi; lack of tonification leads to daily strengthening of pathogen Qi; those who are consumed become weaker, and those who are severe become more severe; inevitable failure to sweat results in death. Third, when excess pathogen is knotted internally, and latent fire flares up internally, warming-tonifying agents are strictly taboo. Warming increases dryness; tonification increases firmness; failure to sweat results in death. Fourth, when the Middle Jiao is deficient and Qi is weak, and the patient falls under the previous clauses regarding sweating taboos, dispersing agents are strictly taboo. Dispersal leads to Qi collapse; Qi collapse prevents sweat from coming out and prevents sweat from stopping; Qi collapse resulting in inability to control sweat results in death. Fifth, when the disease is not Yangming excess pathogen, and the patient falls under the previous clauses regarding purgation taboos, purgative agents are strictly taboo. Purgation leads to loss of Yin; Yin deficiency allows Yang pathogen to sink deeply; failure to sweat results in death. These constitute the so-called Five Taboos. To know the Six Essentials and avoid the Five Taboos is to master the treatment of Shanghan. However, false heat is common, while true heat is rare. To discern subtle distinctions between apparent and real conditions requires extraordinary insight. My earnest exhortations are directed solely at those who study with dedication.