凡大痨、大欲、大病、久病后,气血两虚,阴阳并竭,即为四损,复受伏邪,正虚则邪入愈深,邪深则传
化难出。汗下伤正而正脱,补助郁邪而邪锢,多不可治,当此两难之际,于是乎有补泻合用之法,有先补后泻
之法,先泻后补之法。如人参白虎汤、黄龙汤、竹叶石膏汤,皆补泻合用之法也,先用补剂,后施汗下,先补
后泻之法也。先用汗下,后施补剂,先泻后补之法也。当询病之来路,斟酌施治。尤当审现下之症,若纯见热
症,亦不可以疑似之间误人。大凡周身俱见大实大热之症,而一二处微见虚象,则吃紧照顾其虚;周身俱见虚
象,而一二处独见实症,则吃紧斡旋其实。此治病之权衡也。若夫汗之而表症愈增,如头痛、身痛更甚之类,
清下而里症愈增,如烦渴、痞满、更甚之类,则大虚有盛候也,急宜补之无疑。既辨其症
尤当细辨其脉。凡遇脉之浮候盛大者,须谨察其沉候有无力处;六部脉皆盛者,须谨察其一部有独无力处。果
得其一部一候之真无力,便可略其诸部诸候之假有余。从而施治,自有如神之妙。夫既询其来路之大概,其察
得其轻重之确凭,再加之脉理精详,则烛照无遗矣!至其损症之状甚多,当参后四不足条看。
若四不足与四损,亦各不相同。四损由人事,四不足由天禀;四损在临时,四不足在平素。然四不足亦有
由四损而来者,不得谓四损外便无不足也。四不足者,气、血、阴、阳也。气不足者,少气不足以息,语言难出
也。感邪虽重,反不成胀满痞塞。凡遇此症,纵宜宣伐,必以养气为主。血不足者,面色萎黄,唇口刮白也。
感邪虽重,面目反无阳色。纵宜攻利,必以养血为主。阳不足者,或四肢厥逆,或肌体恶寒,恒多泄泻,至夜益
甚,或口鼻冷气。受邪虽重,反无发热、苔刺、烦渴等症。纵宜攻利清热,必先之以温补,待其虚回,实症全
见,然后以治热之法治之。阴不足者,自然五液枯干,肌肤甲惜。感邪虽重,应汗不汗,应厥不厥。纵宜攻利,
必先之以养阴,待其气化津回,邪多不治自退;设有未退,酌用清利攻之。若早攻之,其病益甚。以上四不足,
合前条四损,每见温热症屡复后。兼此虚损症候者,总不可正治其邪,必以养正为要,先服养正药,待其实症
悉见,方可攻邪。若服攻邪,虚症复见,仍当调补其虚。养正以达邪,祛邪以安正,互相增减,迭为进退,
必使邪尽去,而正不伤,方为善治。
总而言之,劳复、食复、自复、怒复四症,实则易治,虚则难治∶一复可治,再复不治。以余所验,诸劳
多复,御女者死;诸
食多复,犯酒最剧;诸气多复,大怒尤甚。至于屡复之后,已酿成四损、四不足者,急则一旬半月即亡,缓则
迁延时日而毙。即有医疗得法,调养适宜,幸或全愈者,体亦柔脆,最易重感。全在医者善于劝戒,病者自知
保重耳!
凡是患有严重虚劳、纵欲过度、大病或久病之后,导致气血两虚,阴阳俱竭的情况,称为“四损”。此时若再感受潜伏的病邪,正气虚弱则病邪侵入更深,病邪深入则难以通过传化排出。发汗和攻下会损伤正气而导致正气脱失,盲目补益则会郁闭病邪导致邪气固结,大多难以治愈。在这种两难的情况下,就有了补法与泻法合用、先补后泻、先泻后补的治疗方法。例如人参白虎汤、黄龙汤、竹叶石膏汤,都是补泻合用的方法;先用补剂,后施发汗或攻下,是先补后泻的方法;先用发汗或攻下,后施补剂,是先泻后补的方法。应当询问疾病的来龙去脉,斟酌施行治疗。尤其要审视当前的症状,如果纯粹表现为热症,也不可以在犹豫不决中误人。大凡全身都出现大实大热的症状,而有一两处微微显露虚象的,就要着重顾护其虚证;全身都显露虚象,而有一两处唯独显现实症的,就要着重调理其实证。这是治病时的权衡之道。如果用发汗法治疗后表症反而加重,如头痛、身痛更加厉害等,用清热攻下法治疗后里症反而加重,如烦躁口渴、心腹痞满更加厉害等,这就是大虚之证表现出盛实的假象,急需补益,毫无疑问。既然辨别了症状,尤其应当仔细辨别脉象。凡是遇到脉象在浮取时盛大有力的,必须谨慎察看在沉取时是否有无力的地方;六部脉象都盛大的,必须谨慎察看其中是否有一部独显无力。如果真的发现某一部或某一候的真脉无力,就可以忽略其他各部各候的假性有余表现。据此进行治疗,自然会有如神一般的妙效。既然已经询问了疾病的大致来路,又确切掌握了轻重的凭据,再加上对脉理的精细详察,就能洞察无遗了!至于这种虚损病症的表现很多,应当参考后面的“四不足”条文来看。
如果“四不足”与“四损”,也各不相同。“四损”由人事因素引起,“四不足”由先天禀赋决定;“四损”发生在临时发病时,“四不足”存在于平素体质中。然而“四不足”也有由“四损”发展而来的,不能认为在“四损”之外就没有“不足”的情况。“四不足”指的是气、血、阴、阳四个方面。气不足的,表现为气息短少不足以呼吸,说话困难。即使感受邪气较重,反而不会形成胀满痞塞的症状。凡是遇到这种情况,纵然适宜宣散攻伐,也必须以养气为主。血不足的,表现为面色萎黄,嘴唇口角苍白。即使感受邪气较重,面目反而没有红润的阳气色泽。纵然适宜攻利,也必须以养血为主。阳不足的,或者四肢厥冷逆乱,或者肌肤怕冷,经常多泄泻,到了夜晚更加严重,或者口鼻出冷气。即使感受邪气较重,反而没有发热、舌苔生刺、烦躁口渴等症状。纵然适宜攻利清热,必须先进行温补,等待其虚象恢复,实证完全显露后,然后用治热症的方法来治疗。阴不足的,自然会出现津液枯干,肌肤干燥粗糙如鳞甲状。即使感受邪气较重,该出汗却不出汗,该出现厥逆却不出现厥逆。纵然适宜攻利,必须先进行养阴,等待其气化功能恢复、津液回流,病邪大多不治疗也会自行消退;假如病邪未退,酌情使用清利之法攻逐它。如果过早攻逐,病情会更加严重。以上四种不足,结合前面的四条四损,常在温热病症多次复发后见到。兼有这些虚损症候的,总不可以直接正治其邪气,必须以扶正养正为关键,先服用扶正的药物,等待其实证全部显露,才可以攻逐邪气。如果服用攻邪药,虚症再次出现,仍然应当调补其虚损。通过扶正来达到驱邪的目的,通过祛邪来安定正气,互相增减,交替进退,必须使邪气完全去除,而正气不受损伤,这才是良好的治疗。
总而言之,劳复、食复、自复、怒复这四种复发情况,实证容易治疗,虚证难治;一次复发可治,多次复发难治。根据我的经验,各种劳倦导致的复发,房事不节者致死;各种饮食导致的复发,饮酒最严重;各种气机紊乱导致的复发,大怒尤为严重。至于多次复发之后,已经酿成“四损”、“四不足”的,急症的话十几天到半个月就会死亡,缓症的话拖延时日而死。即使有医疗得当,调养适宜,侥幸痊愈的,身体也变得柔弱脆弱,最容易再次感邪。全在于医生善于劝诫,病人自己知道保重罢了!
Whenever there is severe consumptive disease (Lao), excessive sexual indulgence, major illness, or prolonged chronic disease leading to deficiency of both Qi and Blood, and exhaustion of both Yin and Yang, this is termed "Si Sun" (Four Damages). If latent pathogenic factors are subsequently contracted, the deficiency of Zheng Qi (Upright Qi) allows pathogens to penetrate deeper; the deeper the pathogens, the harder it is for them to be transmitted out. Sweating and purging methods damage Zheng Qi leading to its collapse, while blind tonification may stagnate pathogens causing them to become entrenched; such cases are mostly incurable. In this dilemma, methods combining tonification and draining, tonifying first then draining, or draining first then tonifying are employed. For instance, Renshen Baihu Tang (Ginseng White Tiger Decoction), Huanglong Tang (Yellow Dragon Decoction), and Zhuye Shigao Tang (Bamboo Leaf and Gypsum Decoction) represent methods combining tonification and draining. Using tonics first followed by sweating or purging represents tonifying first then draining. Using sweating or purging first followed by tonics represents draining first then tonifying. One must inquire into the origin of the disease and carefully deliberate the treatment. It is crucial to examine current symptoms: if purely heat symptoms are present, one must not hesitate and err. Generally, if the whole body exhibits signs of extreme excess and heat, but a small area shows slight deficiency, priority must be given to protecting the deficiency. Conversely, if the whole body shows deficiency signs, but a specific area shows excess symptoms, priority must be given to managing the excess. This is the balance in treating diseases. If sweating causes exterior symptoms to worsen, such as increased headache and body pain, or if clearing and purging causes interior symptoms to worsen, such as increased irritability, thirst, and fullness, this indicates a severe deficiency presenting with false excess signs. Urgent tonification is undoubtedly required. After distinguishing symptoms, pulse diagnosis must be carefully examined. When encountering pulses that appear large and forceful on superficial palpation (Fu), one must carefully check for weakness on deep palpation (Chen). When all six positions show strong pulses, one must carefully check if any single position is uniquely weak. If true weakness is found in a specific position or depth, the false excess signs in other positions can be disregarded. Treating based on this will yield miraculous results. Having inquired about the general history and determined the severity, combined with detailed pulse analysis, the condition becomes clear. The manifestations of these damage syndromes are numerous; refer to the following section on "Si Bu Zu" (Four Insufficiencies) for details.
"Si Bu Zu" and "Si Sun" differ. "Si Sun" arises from lifestyle/human factors, while "Si Bu Zu" stems from congenital endowment. "Si Sun" occurs during acute illness, whereas "Si Bu Zu" exists in the baseline constitution. However, "Si Bu Zu" can also result from "Si Sun"; one cannot assume insufficiency does not exist outside of "Si Sun". "Si Bu Zu" refers to Qi, Blood, Yin, and Yang insufficiencies. Qi insufficiency manifests as shortness of breath and difficulty speaking. Even with heavy pathogenic invasion, bloating and fullness do not typically occur. In such cases, even if dispersing or purging is indicated, nourishing Qi must be the primary approach. Blood insufficiency manifests as sallow complexion and pale lips/mouth. Even with heavy pathogenic invasion, the face lacks a healthy Yang luster. Even if attacking and draining are indicated, nourishing Blood must be primary. Yang insufficiency manifests as cold extremities, aversion to cold, frequent diarrhea worsening at night, or cold air from mouth/nose. Even with heavy pathogenic invasion, fever, prickly tongue coating, irritability, and thirst are absent. Even if clearing heat and draining are indicated, warm tonification must precede it. Wait for the deficiency to recover and true excess signs to emerge before treating the heat. Yin insufficiency naturally leads to dry fluids and rough, scaly skin. Even with heavy pathogenic invasion, sweating or cold limbs may fail to manifest despite indications. Even if attacking and draining are indicated, nourishing Yin must precede it. Wait for Qi transformation and fluid return; pathogens often resolve spontaneously. If they persist, use mild clearing/draining methods cautiously. Premature attacking worsens the condition. These four insufficiencies, combined with the previous four damages, are often seen after recurrent warm-heat diseases. When concurrent deficiency-damage symptoms exist, direct attack on pathogens should be avoided; nourishing Zheng Qi is essential. Administer nourishing medicines first; only when true excess signs fully appear should pathogens be attacked. If attacking medicines cause deficiency signs to reappear, tonification must resume. Nourishing Zheng to expel pathogens, and expelling pathogens to stabilize Zheng, involve mutual adjustment and alternating advancement/retreat. The goal is complete pathogen elimination without damaging Zheng, which constitutes good treatment.
In summary, relapse due to labor, diet, spontaneous recovery, and anger: excess types are easy to treat, deficiency types are difficult; first relapse is treatable, multiple relapses are not. Based on my experience, relapses from various labors often lead to death in those engaging in sexual activity; relapses from diet are most severe with alcohol consumption; relapses from Qi stagnation are worst with great anger. After multiple relapses, if "Si Sun" and "Si Bu Zu" develop, death may occur within 10 days to half a month in acute cases, or after prolonged suffering in chronic cases. Even with proper medical care and suitable nursing, rare recoveries leave the body fragile and prone to re-infection. Success depends entirely on the physician's ability to advise and the patient's awareness to protect themselves.