问曰∶尺寸俱长，何以知邪在阳明经也？答曰∶长者，泛溢也，言脉过于本位也。阳明
为气血俱多之经，邪一传之，则血气淖溢，故尺寸俱长。又问曰∶脉长者，邪在阳明，而用
药有葛根、承气、白虎不等者，何也？答曰∶阳明用葛根者，治阳明经病也；阳明用承气者
治阳明腑病，邪气结实也；不用葛根、承气而用白虎者，治阳明经病，初传于腑，邪未结
实也。阳明经病，目痛鼻干，漱水不欲咽，而无便闭、谵语、燥渴之症，是为表病里和，则
用葛根汤散之；假如邪已入腑，发热转为潮热，致有谵语、燥渴、便闭、腹胀等症，是为邪
气结聚，则用承气汤下之；假如阳明经病，初传于腑，蒸热自汗，燥渴谵语，而无便闭、腹
胀之症，是为散漫之热，邪未结实，则用白虎汤清中达表而和解之，此治阳明三法也。倘经
腑不明，临证差忒，误人非浅。因知仲景用攻者，攻阳明之腑，不攻阳明之经；用表者，表
阳明之经，非表阳明之腑；辛凉和解者，治腑病散漫之邪，大便未结，腹无所若也。此阳明
经腑之说，所宜急讲也。
少阳经病，目眩，口苦，耳聋，胸满，胁痛，寒热往来，呕吐，头汗，盗汗，舌滑，脉
弦。此少阳经受病，宜用小柴胡汤和解之。仲景云∶少阳证，但见一二症即是，不必悉具。
此经有三禁，吐、汗、下是也。然少阳有兼表、兼里者，务在随时变通，不得以三禁之说而
拘泥也。
问：为什么寸脉和尺脉都呈现长脉，就能判断病邪在阳明经呢？答：所谓“长”，是指脉象泛溢，即脉搏搏动超过了本来的部位。阳明经是气血都很充盛的经脉，一旦邪气传入，气血就会更加充盈泛溢，所以寸部和尺部的脉象都表现为长脉。又问：脉象长表示邪气在阳明经，但用药却有葛根汤、承气汤、白虎汤等不同，这是为什么呢？答：阳明经病使用葛根汤，是治疗阳明经的病；使用承气汤，是治疗阳明腑的病，针对的是邪气结实的情况；不使用葛根汤或承气汤而使用白虎汤，是治疗阳明经的病，此时邪气初传于腑，但尚未形成结实。阳明经病，症状有眼睛疼痛、鼻子干燥、想漱口但不想咽下水，而没有大便闭塞、说胡话（谵语）、极度口渴等症状，这属于表证而里气和顺，就用葛根汤来发散解表；假如邪气已经入腑，发热转变为潮热，导致出现说胡话、极度口渴、大便闭塞、腹部胀满等症状，这属于邪气结聚，就用承气汤来攻下；假如阳明经病，初传于腑，出现蒸蒸发热、自汗出、极度口渴、说胡话，但没有大便闭塞、腹部胀满的症状，这属于散漫的热邪，邪气未结实，就用白虎汤清热并透达肌表以和解，这就是治疗阳明的三种方法。如果分不清经病和腑病，临证时就会出错，误人非浅。因此知道张仲景使用攻下法，是攻下阳明之腑，而不是攻下阳明之经；使用发汗解表法，是解阳明之经，而非解阳明之腑；使用辛凉和解法，是治疗腑病中散漫的邪气，此时大便未结，腹部没有不适感。关于阳明经和腑的理论，是急需深入讲解的。
少阳经病，症状有头晕目眩、口苦、耳聋、胸部满闷、胁肋疼痛、寒热往来、呕吐、头部出汗、盗汗、舌苔滑润、脉弦。这是少阳经受邪所致，适宜用小柴胡汤进行和解治疗。张仲景说：少阳证，只要见到其中一两个症状就可以确诊，不必所有症状都具备。这一经有三项禁忌，即禁止使用催吐、发汗、攻下法。然而少阳病有兼夹表证、兼夹里证的情况，务必根据情况灵活变通，不能因为有三禁的说法而拘泥固执。
Question: Why can it be determined that the pathogen is in the Yangming Meridian when both the Cun (inch) and Chi (cubit) pulses are long? Answer: "Long" refers to an overflowing pulse, meaning the pulse beat extends beyond its normal position. The Yangming Meridian is a meridian with abundant Qi and Blood. Once the pathogen transmits into it, the Qi and Blood become excessively full and overflow, hence both the Cun and Chi pulses present as long. Another question arises: A long pulse indicates the pathogen is in the Yangming Meridian, yet different formulas such as Gegen Tang (Kudzu Decoction), Chengqi Tang (Order the Qi Decoction), and Baihu Tang (White Tiger Decoction) are used. Why is this? Answer: Gegen Tang is used for Yangming Meridian disease; Chengqi Tang is used for Yangming Fu-organ disease, specifically where the pathogen has formed a solid accumulation; Baihu Tang is used when the pathogen has initially transmitted to the Fu-organ but has not yet formed a solid accumulation. In Yangming Meridian disease, symptoms include eye pain, nasal dryness, and the desire to rinse the mouth without swallowing water, while lacking symptoms such as constipation, delirium, or extreme thirst. This represents a exterior syndrome with harmonious interior conditions, so Gegen Tang is used to disperse and release the exterior. If the pathogen has entered the Fu-organ, fever transforms into tidal fever, leading to symptoms like delirium, extreme thirst, constipation, and abdominal distension. This indicates pathogenic accumulation, so Chengqi Tang is used to purge downwards. If Yangming Meridian disease initially transmits to the Fu-organ, presenting with steaming heat, spontaneous sweating, extreme thirst, and delirium, but without constipation or abdominal distension, this represents scattered heat where the pathogen has not solidified. In this case, Baihu Tang is used to clear heat and reach the exterior to achieve harmonization. These are the three methods for treating Yangming. Failure to distinguish between Meridian and Fu-organ diseases leads to clinical errors and significant harm to patients. Thus, it is understood that Zhang Zhongjing's use of purgation targets the Yangming Fu-organ, not the Meridian; his use of diaphoresis targets the Yangming Meridian, not the Fu-organ; and his use of acrid-cool harmonizing methods treats the scattered pathogens in Fu-organ disease where the stool is not bound and the abdomen is free of discomfort. The distinction between Yangming Meridian and Fu-organ theories is urgent to expound.
Shaoyang Meridian disease presents with dizziness, bitter taste in the mouth, deafness, chest fullness, hypochondriac pain, alternating chills and fever, vomiting, sweating on the head, night sweats, a slippery tongue coating, and a wiry pulse. This is Shaoyang Meridian disease, which should be treated with Xiaochaihu Tang (Minor Bupleurum Decoction) to harmonize. Zhang Zhongjing stated: For Shaoyang syndrome, if one or two symptoms are present, it is sufficient for diagnosis; it is not necessary for all symptoms to be present. There are three prohibitions for this meridian: emesis, diaphoresis, and purgation. However, Shaoyang disease may involve concurrent exterior or interior syndromes, requiring flexible adaptation to circumstances, and one must not rigidly adhere to the doctrine of the three prohibitions.