下利，谷道中痛，当以熬盐末熨之，或炒枳实末温熨，二味相兼益佳。若脐下
冷结，不可便熨，冷气攻心腹必死。须先用药温之，久而可熨。凡脐下冷结成关阴，大小便不通，
服药虽多，不见效，以炒盐熨脐下，须臾即通。然关阴已，服巴豆、甘遂、大黄、轻粉之类太多，
即暴通利而损人，尤宜详之也。
大法冬宜温热药。
少阴病，其人饮食入则吐，心中温温欲吐，复不能吐，始得之，手足寒，脉弦迟。若膈上有寒
饮干呕者，不可吐，宜四逆汤温之。（方在四逆证中。）
下利，其脉浮大，此为虚，以强下之故也。设脉浮大，因尔腹鸣，宜当归四逆汤温之。（方在
四逆证中。）
（医以火卧床下，或周身用火迫劫汗，或熨、或误灸，皆属火邪也。）
伤寒脉浮，医以火迫劫之，亡阳，惊或狂，起卧不安者，宜桂枝去芍药加蜀漆牡蛎龙骨救逆
汤。
桂枝（一两半） 蜀漆（一两半） 甘草（一两） 龙骨（二两） 牡蛎（二两半） 生姜（一
两半） 大枣（六枚）
以水六升，先煮蜀漆减一升，内诸药，煮取二升，去滓，温服一盏。无蜀漆以恒山代之。火劫
后脉浮，当汗出而愈。
火邪下之，因烧针烦躁者，桂枝甘草汤主之。
桂枝（半两） 甘草 牡蛎 龙骨（各一两）
以水二升，煮一升，去滓，温取一盏，可代救逆汤使之。
庞曰∶灸及烧针后，证似火劫者，并宜火劫治之。烦躁惊及狂，用六石风引汤尤良，柴胡加龙
骨牡蛎汤亦通用。
病患因火劫，至十五六日，身黄下利，狂欲走。师脉之，言当下清血如豚肝乃愈，后如师言。
何以知之？师曰∶寸口脉阳浮而阴濡弱，阳浮为风，濡弱为虚，浮虚受风少血，发热恶寒，洒淅项
强头眩。医以火熏郁令汗出，恶寒遂甚，客热因火而发，怫郁蒸于肌肤，自为黄，小便微难，短气，
鼻中出血。而复下之，胃无津液，利遂不止，热瘀在膀胱，蓄结成积，状如豚肝。当下不下，心乱
迷愦，狂走赴水，必不能自制。蓄血若去，目明心了，此皆医所为，轻者得愈，极者不治。
下利（腹泻），肛门疼痛，应当用炒热的盐末外敷熨烫，或者用炒过的枳实末温热外敷熨烫，两种方法结合使用效果更好。如果脐下寒冷结聚，不可以立即进行熨烫，因为冷气攻冲心腹会导致死亡。必须先用药温补，经过一段时间调理后才可以熨烫。凡是脐下冷结形成关阴证（一种以二便闭塞为特征的危重病症），大小便不通，服用药物虽然很多，但不见效果，可以用炒热的盐熨烫脐下，片刻之后大便即可通畅。然而关阴证解除后，如果服用巴豆、甘遂、大黄、轻粉等泻下药过多，就会导致突然剧烈腹泻而损伤人体，这一点尤其需要仔细斟酌。
治疗的大法：冬季适宜使用温热性质的药物。
少阴病（少阴经受邪所致的病证），患者进食后即呕吐，心中感觉泛泛不适想吐，却又吐不出来，刚发病时，手足发凉，脉象弦而迟。如果膈上有寒饮导致干呕的，不可使用催吐法，适宜用四逆汤来温阳散寒。（方剂见“四逆证”章节中。）
下利，脉象浮大，这是虚证，是因为强行使用攻下法导致的。假如脉象浮大，同时伴有腹部肠鸣，适宜用当归四逆汤来温经散寒。（方剂见“四逆证”章节中。）
（医生在床下用火烘烤，或全身用火迫法劫取汗液，或用热熨法，或误用艾灸，这些都属于火邪致病。）
伤寒病，脉象浮，医生用火迫法劫取汗液，导致亡阳（阳气脱失），出现惊悸或发狂，坐卧不安的，适宜用桂枝去芍药加蜀漆牡蛎龙骨救逆汤。
桂枝（一两半） 蜀漆（一两半） 甘草（一两） 龙骨（二两） 牡蛎（二两半） 生姜（一两半） 大枣（六枚）
用水六升，先煮蜀漆减少一升，加入其他药物，煮取二升，去除药渣，温服一盏。如果没有蜀漆，可以用恒山代替。火劫法治疗后脉象仍浮，应当通过出汗而痊愈。
火邪致病又误用攻下法，进而因烧针导致烦躁的，由桂枝甘草汤主治。
用水二升，煮取一升，去除药渣，温服一盏，可以替代救逆汤使用。
庞安石说：灸法和烧针后，症状类似火劫致病的，都适宜用火劫法的原则来治疗。对于烦躁、惊悸及发狂的症状，使用六石风引汤尤为良好，柴胡加龙骨牡蛎汤也可以通用。
病患因火劫法治疗，到了十五六天，身体发黄并下利，发狂想要奔跑。医生诊脉后，说应当排出像猪肝颜色的瘀血才能痊愈，后来果然如医生所言。
为什么知道会这样？医生说：寸口脉阳部浮而阴部濡弱，阳浮代表有风邪，濡弱代表正气虚弱，浮虚之体感受风邪且营血不足，出现发热恶寒，身体战栗，颈项强直，头晕目眩。医生用火熏法迫使郁闭之气出汗，导致恶寒更加严重，客热因火邪而发作，怫郁蒸腾于肌肤，自然呈现黄色，小便微感困难，气短，鼻出血。此时医生又误用攻下法，导致胃中津液枯竭，腹泻不止，热邪瘀滞在膀胱，蓄积结成瘀块，形状像猪肝。应当攻下瘀血而未攻下，导致心神混乱，昏迷恍惚，发狂奔走甚至投水自尽，必然无法自我控制。如果瘀血得以去除，眼睛明亮，心神安定，这都是医生失误造成的，病情轻的可以痊愈，极重的则无法救治。
Diarrhea with pain in the anal canal should be treated by applying hot salt powder externally, or by warm application of fried Zhi Shi (Fructus Aurantii) powder; using both together is more effective. If there is cold accumulation below the umbilicus, external heat application must not be performed immediately, as cold qi attacking the heart and abdomen will lead to death. One must first use medication to warm the area, and only after a period of time can heat application be used. In cases where cold accumulation below the umbilicus forms Guan Yin syndrome (a critical condition characterized by obstruction of urination and defecation), with no passage of urine or stool, and despite extensive medication showing no effect, applying hot salt to the lower abdomen can result in immediate bowel movement. However, once Guan Yin syndrome is resolved, excessive use of purgatives such as Ba Dou (Seminar Crotonis), Gan Sui (Radix Euphorbiae Kansui), Da Huang (Radix et Rhizoma Rhei), and Qing Fen (Calomel) will cause sudden severe diarrhea and damage the body; this requires careful consideration.
The general principle: In winter, it is appropriate to use warming and heating medications.
Shaoyin disease (disease of the Shaoyin channel), where the patient vomits immediately after eating, feels nauseous and wants to vomit but cannot, and initially presents with cold hands and feet and a wiry, slow pulse. If there is dry retching due to cold-fluid retention above the diaphragm, vomiting should not be induced; instead, Si Ni Tang (Counterflow Decoction) should be used to warm yang. (Formula see "Si Ni Syndrome" section.)
In diarrhea, if the pulse is floating and large, this indicates deficiency caused by forced purgation. If the pulse is floating and large accompanied by abdominal borborygmus, Dang Gui Si Ni Tang (Angelica Sinensis Counterflow Decoction) should be used to warm the channels. (Formula see "Si Ni Syndrome" section.)
(When physicians use fire under the bed, apply fire pressure to force sweating over the whole body, use hot compresses, or mistakenly use moxibustion, these all constitute Fire Evil pathogenic factors.)
In Shang Han (Cold Damage) disease, if the pulse is floating, and the physician uses fire pressure to force sweating, leading to Yang collapse (loss of yang qi), resulting in palpitations, mania, restlessness, and inability to lie still or sit comfortably, Gui Zhi Qu Shao Yao Jia Shu Kuai Mu Li Long Gu Jiu Ni Tang (Cinnamon Twig Decoction without Paeonia, plus Farfara Flower, Oyster Shell, and Dragon Bone to Rescue from Peril) is indicated.
Gui Zhi (Cinnamon Twig, 1.5 liang) Shu Kuai (Farfara Flower, 1.5 liang) Gan Cao (Licorice Root, 1 liang) Long Gu (Dragon Bone, 2 liang) Mu Li (Oyster Shell, 2.5 liang) Sheng Jiang (Fresh Ginger, 1.5 liang) Da Zao (Jujube, 6 pieces)
Boil in six sheng of water, first boil Shu Kuai until one sheng is reduced, then add other herbs, boil to obtain two sheng, remove dregs, and take one zhan cup warm. If Shu Kuai is unavailable, Heng Shan (Polygala Tenuifolia Root) may substitute. After fire coercion, if the pulse remains floating, recovery comes through sweating.
If Fire Evil pathology is further mistreated with purgation, and burning needles cause irritability, Gui Zhi Gan Cao Tang (Cinnamon Twig and Licorice Decoction) is the primary treatment.
Gui Zhi (Cinnamon Twig, 0.5 liang) Gan Cao (Licorice Root) Mu Li (Oyster Shell) Long Gu (Dragon Bone) (each 1 liang)
Boil in two sheng of water to obtain one sheng, remove dregs, and take one zhan cup warm; this can substitute for Jiu Ni Tang.
Pang Anshi stated: After moxibustion and burning needles, if symptoms resemble those of fire coercion, they should be treated according to the principles of fire coercion therapy. For irritability, palpitations, and mania, Liu Shi Feng Yin Tang (Six-Metal Wind-Driving Decoction) is particularly effective; Chai Hu Jia Long Gu Mu Li Tang (Bupleurum Plus Dragon Bone and Oyster Shell Decoction) is also generally applicable.
A patient treated with fire coercion, on the fifteenth or sixteenth day, developed yellowing of the skin, diarrhea, and mania with a desire to run. The physician palpated the pulse and predicted that passing blood resembling pig liver would lead to recovery, which subsequently occurred.
How was this known? The physician said: The Cun Kou (inch position) pulse showed floating at the yang level and weak/soft at the yin level. Floating indicates wind; weak/soft indicates deficiency. A floating and deficient constitution susceptible to wind, with insufficient blood, presents with fever, aversion to cold, chills, neck stiffness, and dizziness. The physician used fire fumigation to force sweat, exacerbating the aversion to cold. External heat, triggered by fire, stagnated and steamed the skin, causing yellowing. There was slight difficulty in urination, shortness of breath, and epistaxis. Subsequently, the physician mistakenly used purgation, depleting stomach fluids and causing persistent diarrhea. Heat stagnated in the Bladder, accumulating into masses resembling pig liver. Failure to purge the stasis led to mental confusion, coma, mania, running, and attempts to jump into water, indicating loss of self-control. If the blood stasis is removed, vision clears and the mind settles. These outcomes are results of medical error; mild cases recover, while extreme cases are incurable.