蓄血谓血结下焦不行也。
由太阳随经瘀血在里，血为热所搏。
太阳病七八日，表证仍在，脉微而沉，反下，结胸，其人如狂，以热在下
焦，小腹当硬满，小便自利者，蓄血也，抵当主之。小便不利，非血蓄也，是津
液内结也。
又阳明病，其人喜忘，屎虽硬，其色必黑，亦蓄血也。喜忘者，瘀血也，此
又甚也，轻则桃仁承气，重则抵当丸下之。
又如病患无表里证，发热七八日，虽脉浮数者，可下之。假令已下，脉数不
解，浮则伤气，下后脉浮是荣间热去而卫间热在矣；数则伤血，下后脉数是卫间
热去而荣间热在矣。合热则消谷善饥，邪热不杀谷也。至六七日不大便者，瘀血
也，抵当汤主之。
凡看伤寒，先观两目，次看口舌，又次以手自心下至小腹按之，如觉有满硬
者，审之问之，而治之。
劳复谓瘥后血气未平，余热未尽，劳动其热，热还经络复作也。
脉当浮数而硬，若余热未除再热者，则非劳复也。
治法非比伤寒次第，可速下之。曰大热瘥后劳复者，栀子豉汤主之，若有宿
食加大黄。又曰，劳力而耳热者，宜柴胡鳖甲散平解之。
过食而热者，宜消之。
又曰，伤寒瘥后，更发热者，小柴胡主之。脉浮汗之。沉实下之。
又麦门冬汤治劳复。竹叶石膏汤治食复。
干霍乱（一种以腹中绞痛、欲吐不得、欲泻不能为特征的急症）属于死证。其表现为烦躁不安，气喘腹胀，既不能呕吐也不能排泄。
蓄血是指血液瘀结在下焦而不能运行。
这是由于太阳病邪随经入里形成瘀血，血液被热邪搏结所致。
若患太阳病七八日，表证依然存在，脉象微而沉，误用下法后导致结胸，患者出现如狂的症状，这是因为热邪在下焦，小腹应当硬满，若小便通畅自利，则是蓄血证，应使用抵当汤主治。若小便不利，则不是血蓄，而是津液在内凝结。
另外，患阳明病的患者，如果容易健忘，大便虽然坚硬，颜色必定发黑，这也是蓄血证。容易健忘是因为有瘀血，这比前一种情况更严重，轻症用桃仁承气汤，重症用抵当丸攻下。
又如患者没有表证也没有典型的里证，发热七八天，即使脉象浮数，也可以使用下法。假如已经用了下法，脉数不解，浮脉表示伤气，下法之后脉浮说明营分的热已去而卫分的热仍在；数脉表示伤血，下法之后脉数说明卫分的热已去而营分的热仍在。合热会消谷善饥，这是邪热不能腐熟水谷的表现。到了六七天不大便的，是瘀血证，用抵当汤主治。
凡是诊治伤寒，先观察双眼，其次看口舌，再次用手从心下按至小腹，如果觉得有胀满坚硬的感觉，仔细审察并询问病情，然后进行治疗。
劳复是指疾病初愈后气血尚未平复，余热未尽，因劳动使热邪扰动，热邪重新在经络中发作。
脉象应当浮数且硬，如果是余热未除导致的再次发热，那就不是劳复。
治疗方法不像伤寒那样讲究次第，可以迅速使用下法。如果说大病初愈后因劳累复发且大热的，用栀子豉汤主治，如果有宿食则加大黄。又说，因体力劳动导致耳朵发热的，宜用柴胡鳖甲散平和地解除。
因饮食过量导致发热的，宜用消导法。
又说，伤寒初愈后再次发热的，用小柴胡汤主治。脉浮的用汗法，脉沉实的用下法。
另外，麦门冬汤治疗劳复。竹叶石膏汤治疗食复。
Dry Huoluan (a critical condition characterized by abdominal colic, inability to vomit or defecate) is a fatal syndrome. It presents with restlessness and discomfort, panting, abdominal distension, and the inability to vomit or have a bowel movement.
Xueyu (Blood Stasis) refers to blood coagulating in the Lower Jiao (Lower Burner) and failing to circulate.
This occurs when pathogenic factors from Taiyang disease (Taiyang Syndrome) follow the meridians into the interior, forming blood stasis where blood is constrained by heat.
If Taiyang disease persists for seven to eight days with exterior symptoms still present, and the pulse is faint and deep, improper use of purgatives may lead to Jie Xiong (Chest Binding). If the patient exhibits manic-like behavior, it indicates heat in the Lower Jiao; the lower abdomen should be hard and full. If urination is normal and free, it is Xueyu (Blood Stasis), treated primarily with Didang Tang (Madder, Persimmon Seed, and Cinnamon Twig Decoction). If urination is difficult, it is not blood stasis but rather internal congealing of body fluids.
Furthermore, in Yangming disease (Yangming Syndrome), if the patient suffers from forgetfulness, and although stool is hard, its color must be black, this is also Xueyu (Blood Stasis). Forgetfulness indicates blood stasis, which is a more severe condition than previously described. For mild cases, Taoren Chengqi Tang (Peach Kernel and Rhubarb Decoction) is used; for severe cases, Didang Wan (Madder, Persimmon Seed, and Cinnamon Pill) is used to purge.
Similarly, if a patient has neither exterior nor typical interior symptoms but has had fever for seven to eight days, even if the pulse is floating and rapid, purgatives may be used. Suppose purgatives have already been administered, yet the rapid pulse persists: a floating pulse indicates Qi injury; after purgation, a floating pulse means heat in Ying (Nutritive) level has cleared while heat in Wei (Defensive) level remains. A rapid pulse indicates Blood injury; after purgation, a rapid pulse means heat in Wei (Defensive) level has cleared while heat in Ying (Nutritive) level remains. Combined heat consumes food leading to hunger, whereas pathogenic heat fails to digest grain. By the sixth or seventh day, if there is no bowel movement, it is blood stasis, treated with Didang Tang (Madder, Persimmon Seed, and Cinnamon Twig Decoction).
In all cases of treating Shanghan (Cold Damage), first observe the eyes, then inspect the mouth and tongue, and finally palpate from the epigastrium down to the lower abdomen with the hand. If hardness and fullness are felt, carefully examine and inquire about the condition before treating.
Laofu (Relapse due to Overexertion) refers to a relapse occurring after recovery when Qi and Blood have not yet stabilized, residual heat remains, and physical exertion stirs the heat, causing it to re-activate in the meridians.
The pulse should be floating, rapid, and firm. If fever recurs due to residual heat not yet eliminated, it is not Laofu (Relapse due to Overexertion).
The treatment method differs from the sequential approach of Shanghan (Cold Damage); purgatives can be used rapidly. For Laofu (Relapse due to Overexertion) with high fever after major illness, Zhizi Chi Tang (Gardenia and Fermented Soybean Decoction) is primary; add Dahuang (Rhubarb) if there is retained food. It is also stated that for ear heat caused by labor effort, Chaihu Biejia San (Bupleurum and Turtle Shell Powder) should be used to resolve it gently.
For fever caused by overeating, resolving methods (digestives) should be used.
It is also stated that for fever recurring after Shanghan (Cold Damage) recovery, Xiaochaihu Tang (Minor Bupleurum Decoction) is primary. If the pulse is floating, use sweating methods; if deep and solid, use purgative methods.
Additionally, Maidong Tang (Ophiopogon Decoction) treats Laofu (Relapse due to Overexertion). Zhuye Shigao Tang (Bamboo Leaf and Gypsum Decoction) treats Shifu (Relapse due to Dietary Indiscretion).