胸烦不呕去参夏，加蒌若渴半易根，腹痛去芩加芍药，心悸尿秘苓易芩，胁下痞硬
枣易蛎，不渴微热桂易参，咳去参枣加干味，小柴临证要当斟。
【注】少阳经主证，宜小柴胡汤主治也。其或有之证，务要临证斟酌加减可也。若胸
中烦而不呕，去半夏、人参，加栝萎实。若渴者，以半夏易栝萎根。若腹中痛，去黄芩
加白芍，若心下悸，小便不利者，加茯苓去黄芩。若胁下痞硬，加牡蛎去大枣。若不渴
外有微热者，去人参加桂枝微汗之。若咳者，去人参、大枣，加干姜、五味子。义详少阳
篇小柴胡汤下。
少阳三禁要详明，汗谵吐下悸而惊，甚则吐下利不止，水浆不入命难生。
【注】三禁，谓少阳禁吐、禁汗、禁下也。若误发汗，则生谵语，若误吐下，则心悸而
惊。少阳经，即有心下硬，不可下，下之甚，则下利不止。即有胸中满，不可吐，吐之甚，
则水浆不入，变成危候，命难生也。详少阳篇。
胸满热烦栀子豉，痞硬冲喉瓜蒂平，发热恶寒肢烦痛，微呕支结柴桂宁。郁郁微烦
呕不止，心下痛硬大柴攻，误下柴胡证仍在，复与柴胡振汗生。
【注】上言其禁，恐失宜也；此言其可，
贵变通也，胸满烦热，太阳少阳轻邪也，宜栀子豉汤涌之。胸满痞硬，气上冲喉不得息
者，太阳、少阳重邪也，宜瓜蒂散吐之。发热恶寒，四肢烦疼微呕，心下支结，太阳、少
阳表证也，宜柴胡桂枝汤，微汗两解之。郁郁微烦，呕不止，心下痛硬，少阳、阳明表
里证也，宜大柴胡汤缓攻两解之。误下不致变逆，柴胡证仍在者，复与柴胡汤以和解之，
若解则必蒸蒸振汗出而解，以下后虚故也。详太阳、少阳篇。
Chest fullness with vexation but no vomiting: remove Ren Shen (Ginseng Radix) and Ban Xia (Pinelliae Rhizoma), add Gua Lou (Trichosanthis Fructus). If thirst is present, replace Ban Xia with Gua Lou Gen (Trichosanthis Radix). Abdominal pain: remove Huang Qin (Scutellariae Radix), add Shao Yao (Paeoniae Radix). Palpitations with urinary difficulty: replace Fu Ling (Poria) with Huang Qin (note: original text logic appears inverted compared to standard practice, translated literally). Hypochondriac fullness and hardness: replace Da Zao (Jujubae Fructus) with Mu Li (Ostreae Concha). No thirst with slight exterior heat: replace Ren Shen with Gui Zhi (Cinnamomi Ramulus). Cough: remove Ren Shen and Da Zao, add Gan Jiang (Zingiberis Rhizoma) and Wu Wei Zi (Schisandrae Fructus). When using Xiao Chai Hu Tang (Minor Bupleurum Decoction), clinical judgment must be exercised carefully.
[Note] The main syndrome of the Shaoyang (Lesser Yang) meridian is primarily treated with Xiao Chai Hu Tang (Minor Bupleurum Decoction). If accompanying symptoms exist, modifications must be considered based on clinical presentation. If there is chest vexation without vomiting, remove Ban Xia and Ren Shen, and add Gua Lou Shi (Trichosanthis Fructus). If thirst is present, substitute Gua Lou Gen for Ban Xia. If abdominal pain occurs, remove Huang Qin and add Bai Shao (White Peony Root). If palpitations occur with difficult urination, add Fu Ling and remove Huang Qin. If hypochondriac fullness and hardness are present, add Mu Li and remove Da Zao. If there is no thirst but slight exterior heat, remove Ren Shen and add Gui Zhi to induce slight sweating. If coughing occurs, remove Ren Shen and Da Zao, and add Gan Jiang and Wu Wei Zi. The rationale is detailed under Xiao Chai Hu Tang in the Shaoyang chapter.
The "Three Prohibitions" of Shaoyang disease must be clearly understood: misapplied sweating leads to delirious speech; misapplied vomiting or purging leads to palpitations and fright. Severe cases may result in unceasing vomiting and diarrhea, inability to take food or fluids, leading to a critical condition where life is hard to save.
[Note] The "Three Prohibitions" refer to the prohibitions against vomiting, sweating, and purging in Shaoyang disease. If sweating is mistakenly induced, delirium ensues. If vomiting or purging is mistakenly applied, palpitations and fright occur. In Shaoyang disorders, even if there is epigastric hardness, purging is contraindicated; severe purging leads to unceasing diarrhea. Even if there is chest fullness, vomiting is contraindicated; severe vomiting leads to the inability to ingest food or fluids, resulting in a critical state where life is endangered. Refer to the Shaoyang chapter for details.
For chest fullness and vexation with heat, use Zhi Zi Chi Tang (Gardenia and Fermented Soybean Decoction) to induce emesis. For fullness, hardness, and qi rushing to the throat causing breathing difficulty, use Gua Di San (Melon Seed Powder) to induce emesis. For fever, aversion to cold, limb vexation and pain, slight vomiting, and subcostal binding (Zhi Jie), use Chai Hu Gui Zhi Tang (Bupleurum and Cinnamon Twig Decoction) to resolve both Taiyang and Shaoyang through slight sweating. For depression with slight vexation, incessant vomiting, and painful hardness in the epigastrium, use Da Chai Hu Tang (Major Bupleurum Decoction) for gentle attack and dual resolution. If purging was mistakenly applied but the Chai Hu syndrome remains, re-administer Chai Hu Tang for harmonization; resolution will likely manifest as shivering followed by sweating due to post-purging deficiency. Refer to the Taiyang and Shaoyang chapters.
[Note] The preceding text discusses prohibitions to prevent inappropriate treatment; this section discusses permissible methods, emphasizing flexibility. Chest fullness and vexation with heat indicate light pathogenic factors affecting both Taiyang and Shaoyang, suitable for Zhi Zi Chi Tang to induce emesis. Chest fullness, hardness, and qi rushing to the throat causing respiratory distress indicate heavy pathogenic factors affecting both Taiyang and Shaoyang, suitable for Gua Di San to induce emesis. Fever, aversion to cold, limb vexation and pain, slight vomiting, and subcostal binding represent exterior syndromes of Taiyang and Shaoyang, suitable for Chai Hu Gui Zhi Tang to resolve both via slight sweating. Depression with slight vexation, incessant vomiting, and painful hardness in the epigastrium represent interior-exterior syndromes of Shaoyang and Yangming, suitable for Da Chai Hu Tang for gentle dual resolution. If purging was mistakenly applied without causing adverse transformations, and the Chai Hu syndrome persists, re-administer Chai Hu Tang for harmonization. Resolution typically presents as shivering and sweating due to the deficiency following purging. Refer to the Taiyang and Shaoyang chapters.