水蛭（熬） 虻虫（去翅足熬，各二十个） 大黄（三两，酒洗） 桃仁（二十五个，去皮尖） 上四味，捣分
四丸，以水一升，煮一丸，取七合，服之， 时当下血，若不下者更服。 ∶一周时也。
伤寒有热，少腹满，应小便不利，今反利者，为有血也，当下之，不可余药，宜抵当丸。热而少腹满，又
小便利，必兼三者，乃为血证谛。不可余药，谓此症须缓下其血，用丸使之徐下。
芫花（熬） 甘遂 大戟（等分） 大枣（十枚） 上三味，各别捣为散，以水一升半，先煮大枣肥者十枚，取
八合，去渣，纳药末，强人服一钱匕，羸人服半钱，得快下利后，糜粥自养，平旦温服，若下少，病不除
者，明日更服，加半钱。
太阳中风，下利呕逆，表解者，乃可攻之，其人 汗出，发作有时，头痛，心下痞硬满，引胁下痛，
水停也。干呕短气，汗出不恶寒者，此表解，里未和也，不恶寒为表解，以上诸症，皆里不和，凡蓄水之
症皆如此，不特伤寒为然也。十枣汤主之。服此汤以下蓄饮。
大黄（六两，去皮） 芒硝（一升） 甘遂（一钱匕） 上三味，以水六升，先煮大黄，取二升，去渣，纳芒硝，
煮一、两沸，纳甘遂末，温服一升，得快利，止后服。
太阳病，脉浮而动数，浮则为风，数则为热，动则为痛，数则为虚，头痛发热，微盗汗出，而反恶寒
者，表未解也，医反下之，经云∶病发于阳而反下之。热入因作结胸是也。动数变迟，正气益虚。膈内拒痛，
胃中空虚，客气动膈，短气躁烦，心中懊 ，阳气内陷，心下因硬，则为结胸，大陷胸汤主之。此段
明所以致结胸之由，及结胸之状最详，乃因邪在上焦，误下以虚其上焦之气，而邪随陷入也。此症与承气法
迥殊、若不结胸，但头汗出，余处无汗，剂颈而还，小便不利，身必发黄也。此乃误下，而邪气不陷入上焦，
反郁于皮肤肌肉之间，故现此等症。伤寒六、七日，结胸热实，脉沉而紧，心下痛，按之石硬者，此段申
结胸之象尤明。大陷胸汤主之。
伤寒十余日，过经。热结在里，复往来寒热者，与大柴胡汤。但结胸无大热者，此为水结在胸胁也。
结胸本无他物，气与水所停也。但头微汗出者，热结在上。大陷胸汤主之。
太阳病，重发汗，而复下之，不大便五、六日，舌上燥而渴，胸有蓄饮，日晡所，小有潮热，从心下
至少腹，硬满而痛，不可近者，已汗下而大痛如此，知非有物之实邪矣。前云∶膈内拒痛。又云∶心下石
硬。专指上焦说。此云∶从心下至少腹硬、满、痛，则上下皆痛，其根总由心下而起，与承气症自殊。大
陷胸汤主之。
伤寒五、六日，呕而发热者，柴胡汤证具，而以他药下之，误治。柴胡证仍在者，复与柴胡汤。此虽
已下之，不为逆，必蒸蒸而振，却发热汗出而解。邪向里而更虚，故汗出为难。若心下满而硬痛者，此为
结胸也，大陷胸汤主之。
水蛭（炒制） 虻虫（去除翅膀和足后炒制，各二十个） 大黄（三两，用酒清洗） 桃仁（二十五个，去皮和尖） 以上四味药，捣碎并分成四丸，用水一升，煮其中一丸，取汁七合服用，此时应当排出瘀血，如果未排出则再服。∶指服药一周的时间。
伤寒病伴有发热，小腹部胀满，本应小便不利，现在反而小便通畅，这是有瘀血的征象，应当攻下瘀血，不可使用其他药物，适宜用抵当丸。发热且小腹胀满，加上小便通畅，必须同时具备这三种情况，才是确诊为瘀血证的依据。所谓“不可余药”，是指此症需要缓慢攻下瘀血，使用丸剂使其徐徐下行。
芫花（炒制） 甘遂 大戟（等量） 大枣（十枚） 以上三味药，分别单独捣成散剂，用水一升半，先煮肥大的大枣十枚，取汁八合，去渣，纳入药末，体质强壮的人服用一钱匕，体质虚弱的人服用半钱，得到快速腹泻后，喝稀粥自我调养，清晨空腹温服，如果腹泻量少，病邪未除，第二天再服，增加半钱。
太阳中风证，出现下利、呕吐逆气，表证已解，才可以攻里。患者汗出，发作有定时，头痛，心下部痞塞硬满，牵引胁下疼痛，这是水饮停聚所致。干呕、短气，汗出且不恶寒的，这是表证已解，里气未和。不恶寒说明表证已解，以上各种症状，都是里气不和的表现，凡是蓄水之症都是如此，不仅限于伤寒病。十枣汤主治。服用此汤以攻下蓄积的水饮。
大黄（六两，去皮） 芒硝（一升） 甘遂（一钱匕） 以上三味药，用水六升，先煮大黄，取汁二升，去渣，纳入芒硝，煮一至两沸，纳入甘遂末，温服一升，得到快速通利后，停止后续服用。
太阳病，脉象浮而动数，浮脉主风，数脉主热，动脉主痛，数脉也主虚，头痛发热，微微盗汗，反而恶寒的，说明表证未解。医生反而使用下法，经云：“病发于阳而反下之，热入因作结胸”即是这种情况。动数之脉变为迟脉，正气更加虚弱。膈内拒按疼痛，胃中空虚，客气扰动膈间，短气烦躁，心中懊恼，阳气内陷，心下因此变硬，这就形成结胸，大陷胸汤主治。这段文字详细说明了导致结胸的原因及结胸的症状，是因为邪气在上焦，误用下法使上焦之气虚弱，邪气随之陷入。此症与承气汤法截然不同，如果不形成结胸，仅头部出汗，身体其余部位无汗，汗止于颈部，小便不利，身体必然发黄。这是误用下法后，邪气未陷入上焦，反而郁结在皮肤肌肉之间，所以出现这些症状。伤寒六七天，结胸热实证，脉沉而紧，心下疼痛，按压如石头般硬的，这段文字进一步阐明结胸的征象，尤为明显。大陷胸汤主治。
伤寒十余日，已过经传变。热邪结聚在里，又出现往来寒热的，给予大柴胡汤。但结胸证没有大热的，这是水邪结聚在胸胁。结胸本身没有其他病理产物，只是气和水的停聚。仅头部微微出汗的，是热邪结聚在上部。大陷胸汤主治。
太阳病，重发汗后又误用下法，五六天不大便，舌面干燥且口渴，胸中有蓄积的水饮，傍晚时分有轻微潮热，从心下直到小腹部，坚硬胀满且疼痛，甚至不能触碰，已经经过汗法和下法治疗却剧烈疼痛至此，可知这不是有形实邪。前文说：“膈内拒痛。”又说：“心下石硬。”专门指上焦而言。这里说：“从心下至少腹硬、满、痛”，则是上下皆痛，其根源总由心下引起，与承气汤证自然不同。大陷胸汤主治。
伤寒五六天，呕吐且发热的，具备柴胡汤证，却用其他药物误下，属于误治。若柴胡证仍在，再次给予柴胡汤。这虽然已经误下，但不为逆证，必定会出现蒸蒸而振栗，随后发热汗出而病解。邪气向里且正气更虚，所以汗出较为困难。如果心下满而且硬痛的，这是结胸证，大陷胸汤主治。
Leech (prepared by stir-frying) *Tabanus* (remove wings and feet, prepare by stir-frying, 20 each) *Rhei Radix et Rhizoma* (3 liang, washed with wine) *Persicae Semen* (25 seeds, remove skin and tip). The above four ingredients are pounded and divided into four pills. Boil one pill in one sheng of water until reduced to seven he, then administer. At this time, blood stasis should be discharged; if not discharged, administer again. ∶ Refers to a period of one week.
In Taiyang disease accompanied by fever and fullness in the lower abdomen, urination should be difficult. If it is now smooth, it indicates the presence of blood stasis. It must be purged; do not use other medicines. *Didang Wan* (Madder Pill) is appropriate. Fever combined with lower abdominal fullness and smooth urination—only when all three conditions are present can it be definitively diagnosed as a blood syndrome. "Do not use other medicines" means that for this syndrome, blood stasis must be gently purged; using a pill formulation allows for a gradual downward movement.
*Genkwan Flos* (prepared by stir-frying) *Kansui Radix* *Euphorbiae Pekinensis Radix* (equal parts) *Jujubae Fructus* (10 fruits). The above three ingredients are separately pounded into powder. Add one sheng and half of water, first boil ten plump *Jujubae Fructus* until reduced to eight he, strain, add the medicinal powders. Strong individuals take one qian bi; frail individuals take half a qian bi. After obtaining rapid diarrhea, nourish oneself with millet porridge. Administer warm on an empty stomach at dawn. If the discharge is scant and the pathogen remains, administer again the next day, increasing the dose by half a qian bi.
In Taiyang Wind-stroke syndrome, with diarrhea and vomiting/retching, if the exterior syndrome has resolved, internal attack may proceed. If the patient sweats, attacks occur at specific times, has headache, epigastric stuffiness and hardness/fullness radiating to the hypochondrium, this is due to fluid retention. Dry retching, shortness of breath, sweating without aversion to cold indicates the exterior is resolved but the interior is disharmonious. Absence of aversion to cold confirms exterior resolution. All the aforementioned symptoms indicate interior disharmony. This applies to all fluid-retention syndromes, not just Cold Damage. *Shizao Tang* (Ten Jujube Decoction) is the primary treatment. This decoction is used to purge accumulated fluid.
*Rhei Radix et Rhizoma* (6 liang, peeled) *Natrii Sulfas* (1 sheng) *Kansui Radix* (one qian bi). The above three ingredients: add six sheng of water, first boil *Rhei Radix et Rhizoma* until reduced to two sheng, strain, add *Natrii Sulfas*, boil for one or two boils, add *Kansui Radix* powder, administer one sheng warm. Stop subsequent administration after obtaining rapid purgation.
In Taiyang disease, if the pulse is floating, active, and rapid: floating indicates wind, rapid indicates heat, active indicates pain, and rapid also indicates deficiency. Headache, fever, slight night sweats, yet aversion to cold persists, indicating the exterior is not resolved. If the physician erroneously uses purgation, as stated in the Classics: "When a disease originates from Yang and purgation is wrongly applied, heat enters and forms Chest Binding," this is the case. An active/rapid pulse changing to slow indicates further depletion of healthy qi. Rejection pain within the diaphragm, emptiness in the stomach, rebellious qi disturbing the diaphragm, shortness of breath, irritability, mental restlessness (*Wu Liao*), internal sinking of yang qi, hardness in the epigastrium—this constitutes Chest Binding (*Jie Xiong*). *Daxiexiong Tang* (Major Xiexiong Decoction) is indicated. This passage details the cause and manifestations of Chest Binding: because the pathogen was in the Upper Jiao, erroneous purgation depleted the Qi of the Upper Jiao, allowing the pathogen to sink inward. This syndrome is distinct from the *Chengqi* method. If Chest Binding does not form, but only the head sweats while the rest of the body is dry, with sweat stopping at the neck, and urination is difficult, jaundice will inevitably develop. This occurs because erroneous purgation prevents the pathogen from sinking into the Upper Jiao, causing it to stagnate between the skin and muscles, thus presenting these symptoms. In Cold Damage after six or seven days, if there is Heat-Excess Chest Binding with a deep and tight pulse, pain in the epigastrium, and hardness upon palpation like stone, this further clarifies the signs of Chest Binding. *Daxiexiong Tang* is indicated.
In Cold Damage lasting over ten days, having passed through the meridians, with heat binding internally and alternating chills and fever, *Da Chaihu Tang* (Major Bupleurum Decoction) is given. However, if there is Chest Binding without significant heat, this is water binding in the chest and hypochondrium. Chest Binding itself involves no other pathological products, only the stagnation of Qi and water. Slight sweating only on the head indicates heat binding in the upper part. *Daxiexiong Tang* is indicated.
In Taiyang disease, after severe sweating followed by erroneous purgation, if there is constipation for five or six days, dry tongue with thirst, fluid retention in the chest, slight tidal fever in the late afternoon, hardness, fullness, and pain from the epigastrium down to the lower abdomen that cannot be touched, knowing that despite prior sweating and purgation the pain is so severe, it is known that this is not a solid exuberant pathogen. Previously mentioned: "Rejection pain within the diaphragm." Also: "Hardness in the epigastrium like stone," referring specifically to the Upper Jiao. Here: "Hardness, fullness, and pain from the epigastrium to the lower abdomen" indicates pain throughout, originating from the epigastrium, which is distinct from *Chengqi* syndromes. *Daxiexiong Tang* is indicated.
In Cold Damage after five or six days, with vomiting and fever, the *Chaihu* syndrome criteria are present, but erroneous purgation with other medicines was performed. If the *Chaihu* syndrome persists, administer *Chaihu* decoction again. Although purgation has been performed, it is not a counter-indication; the patient will likely experience shivering and trembling, followed by fever and sweating, leading to resolution. As the pathogen moves inward and healthy qi becomes more deficient, sweating is difficult. If the epigastrium is full, hard, and painful, this is Chest Binding, and *Daxiexiong Tang* is indicated.