凡疮虽因营气不从。逆于肉理所生。各形不同者。因逆之微甚。邪之轻重可知也。痈
者壅也塞也。壅塞之甚。故形大而浮也。纵广尺许者是也。疽者阻也。不通也。深而恶也。
其形有头粒是也。疔者丁也。定也。其形虽小。一起即有顶如泡丁之形。痒痛不一者是也。
疖者节也。乃时之邪热感受而成。故形小。至大不过二三寸者是也。瘤者留也。畜也。赤
肿如榴之形是也。丹者赤也。火也。标红势浅大而浮也。疡者阳也。乃有头之小疮是也。
痘者豆也。形有豆。是胎毒所生也。故世人未免也。疹者隐也。隐而现。现而隐。有头粒
而更手。俗称痧子是也。亦胎毒畜于肝脏之所生也。结核者在皮肤中。如果之核坚硬。初
则推之可动无根是也。久则推之不动。亦有作脓而未得其治也。
夫疮疡者阳也。火也。经云。诸痛痒疮疡皆属心火。火为阳。宜于春夏。旺于巳午。
乃万物蕃秀之时。故为顺。忌秋冬者为阴。乃万物收藏之时。故为逆也。此四时之逆顺也。
然五脏六腑亦有生克。四时所宜之逆顺。疮医不可不知也。假令肺疽肺痿之症。肺为五脏
之华盖。生于皮毛。行于气。气为卫。乃卫护于一身。使荣血润养。周流无所不至是也。
今肺病则右寸口脉数而虚者。肺萎也。数而实者。肺疽也。其候则口干喘满。烦躁而渴。
甚则四肢微肿。咳吐脓血腥臭。胸中隐隐微痛是也。甚症现于秋冬可救何也。则肺旺于秋
是也。冬寒水旺。子能救母。母子相生。故云可救为顺是也。春夏木旺火胜之时。肺金病
再遇火旺之时。三伏之天。流金烁石之时。金受火克。此为逆。故难治也。叔和云夏得肺
而难瘥是也。余脏仿此则可知也。
凡是疮疡，虽然是因为营气运行不畅，在肌肉纹理中逆乱阻滞而生成。各种形态不同的原因，可以根据阻滞的轻重和邪气的深浅来推断。
痈，就是壅塞的意思。因为壅塞非常严重，所以形状大而浮肿。纵横大约一尺见方的就是这类。
疽，就是阻隔不通的意思。病位深且性质恶劣。它的形状有颗粒状的突起。
疔，取“丁”和“定”之意。它的形状虽然小，但一旦发作，顶部就像水泡或钉子一样坚硬，伴有瘙痒或疼痛不一的症状。
疖，取“节”之意。是由于感受时令的邪热而成。所以形状较小，最大不过二三寸。
瘤，取“留”和“蓄积”之意。红肿的形状像石榴一样。
丹（丹毒），取“赤”和“火”之意。颜色鲜红，病势浅表但范围大且浮肿。
痘，取“豆”之意。形状像豆子，是由胎毒生成的。所以世人难免会得。
疹，取“隐”之意。若隐若现，出现后又隐藏，有颗粒状突起且用手触摸感觉明显。俗称痧子。这也是胎毒蓄积在肝脏所生成的。
结核，位于皮肤之中，像果实的核一样坚硬。初期推动时可以移动，没有根基；久了之后推动不动。也有化脓但未得到正确治疗的。
疮疡属于阳证，属火。经书说：“所有的痛、痒、疮疡都归属于心火。”火为阳，适宜于春夏季节，在巳时、午时旺盛，这是万物繁茂秀丽的时期，所以称为顺证。忌讳秋冬季节，因为秋冬属阴，是万物收藏的时期，所以称为逆证。这就是四季的逆顺规律。
然而五脏六腑之间也有生克关系，四时适宜的逆顺变化，治疗疮疡的医生不可不知道。
举例来说，肺疽、肺痿等病症。肺是五脏中的华盖，生于皮毛，行于气分。气作为卫气，护卫全身，使营血滋润营养，周流全身无所不到。
现在如果肺有病，右寸口脉象数而虚的，是肺痿；脉象数而实的，是肺疽。其症状表现为口干、气喘胸闷、烦躁口渴，严重时四肢轻微肿胀，咳嗽吐出的脓血带有腥臭味，胸中隐隐微痛。
重症出现在秋冬季节可以救治，为什么呢？因为肺旺于秋季。冬季寒冷水气旺盛，水能生木（此处原文逻辑似有误，通常金生水，水生木，或指肾水滋肺金之母？原文说“子能救母”，肺属金，肾属水，金生水，水是金之子。若冬寒水旺，子盛则能资助母脏？或者指冬季水旺克制夏季之火？原文逻辑较为特殊，按字面翻译：冬季水气旺盛，子脏（肾）能救助母脏（肺）。母子相生，所以说可救，称为顺证。
而在春夏木旺火胜的时候，肺金生病又遇到火旺的时候，如三伏天，流金烁石之时，金受到火的克制，这称为逆证，所以难治。王叔和说：“夏天得肺病很难痊愈。”其他脏腑的情况也可以依此类推。
All sores and ulcers, although generated because Ying Qi (Nutritive Energy) fails to flow smoothly and reverses within the muscle tissues, vary in form. The severity of this reversal and the lightness or heaviness of the pathogenic factors can be known from these differences.
"Yong" (Carbuncle) means obstruction. Due to severe obstruction, the shape is large and floating (swollen). Those spanning approximately one chi in length and width belong to this category.
"Ju" (Deep-seated abscess) means blockage and non-patency. It is deep and malignant. Its shape presents with granular protrusions.
"Ding" (Tetanus-like nodule/Plague boil) takes its name from "Ding" (nail) and "Ding" (fixed/stable). Although small in size, once it arises, the top resembles a blister or a nail. It presents with varying degrees of itching and pain.
"Jie" (Boil/Furuncle) takes its name from "Jie" (node/joint). It is formed by contracting seasonal pathogenic heat. Therefore, its shape is small, not exceeding two or three cun even at its largest.
"Liu" (Tumor) takes its name from "Liu" (retention) and "Xu" (accumulation). It appears red and swollen, resembling the shape of a pomegranate.
"Dan" (Erysipelas) takes its name from "Chi" (red) and "Huo" (fire). It is bright red, superficial in nature but extensive and swollen.
"Yang" (Ulcer/Sore) takes its name from "Yang" (Yang energy). It refers to small sores that have a head.
"Dou" (Smallpox) takes its name from "Dou" (bean). Its shape resembles beans; it is generated by fetal toxicity. Thus, people cannot avoid it.
"Zhen" (Measles/Rash) takes its name from "Yin" (hidden). It appears and disappears intermittently. It has granular protrusions and is more palpable to the touch. Commonly known as "Sha Zi". It is also generated by fetal toxicity accumulated in the Liver.
"Tie He" (Scrofula/Knots) are located within the skin, hard like the pits of fruits. Initially, they can be pushed and move without a root; after a long time, they become immobile. Some may suppurate if not treated correctly.
Sores and ulcers belong to Yang and Fire. The Classics state: "All pain, itching, sores, and ulcers belong to Heart Fire." Fire is Yang, favorable in Spring and Summer, and prosperous during the Si and Wu hours. This is the time when all things flourish and appear beautiful, hence it is considered a "Shun" (Favorable/Smooth) condition. Autumn and Winter are avoided because they belong to Yin, the time when all things are stored and collected, hence it is considered a "Ni" (Unfavorable/Opposing) condition. This constitutes the favorable and unfavorable conditions of the four seasons.
However, the Five Zang and Six Fu organs also have generating and overcoming relationships. Physicians treating sores and ulcers must understand the favorable and unfavorable conditions relative to the seasons.
For example, consider symptoms of Lung Ju (Lung Abscess) and Lung Fei Wei (Lung Atrophy/Withering). The Lung is the canopy of the five Zang organs, originating in the skin and hair, and functioning through Qi. Qi acts as Wei Qi (Defensive Energy), protecting the entire body, allowing Ying Blood to nourish and circulate throughout without omission.
If there is lung disease, a rapid and deficient pulse at the right Cun Kou position indicates Lung Fei Wei (Atrophy); a rapid and excess pulse indicates Lung Ju (Abscess). The manifestations include dry mouth, panting, chest fullness, irritability, thirst, and in severe cases, slight swelling of the four limbs, coughing up purulent bloody sputum with a foul odor, and dull, slight pain in the chest.
Severe symptoms appearing in Autumn and Winter can be cured. Why? Because the Lung prospers in Autumn. In Winter, Cold Water Qi is prosperous; the Child organ (Kidney/Water) can rescue the Mother organ (Lung/Metal). Since Mother and Child generate each other, it is said to be curable and thus favorable (Shun).
In contrast, during Spring and Summer when Wood is prosperous and Fire prevails, if Lung Metal is diseased and encounters a time of excessive Fire, such as during the Sanfu days (the hottest period of summer) when metal flows and stones melt, Metal is overcome by Fire. This is considered Ni (Unfavorable/Opposing), making it difficult to treat. Shuhe (Wang Shuhe) stated that obtaining Lung disease in Summer is difficult to heal. The situations of other organs can be understood by analogy.