感寒者，触受风寒也。四时俱有感寒之证，脉浮或紧，头痛发热无汗，或恶寒，或咳嗽不禁，即伤寒之
浅者。以桑防汤主之。此时俗通治之法也，重者仍以伤寒法治之。
桑防汤
桑叶（三钱） 防风（三钱） 甘草（二钱） 白芍（三钱） 杏仁（三钱） 生姜（三
钱片） 桔梗（二钱） 水煎大半杯，温服，覆衣取微汗。
伤风者，中虚而受外感也。其人肺经素有湿气，一旦风寒闭其皮毛，肺气壅遏，鼻流清涕，时出嚏喷，或
三五日，或七日，咳出青黄涕，其状如脓，从口鼻出，肺尚无伤，若不出即肺伤而死矣。勿以病浅而忽之也
。以紫苏姜苓汤主之。
紫苏姜苓汤
苏叶（三钱） 生姜（三钱） 甘草（二钱） 茯苓（三钱） 橘皮（三钱） 砂仁（二
钱） 半夏（三钱） 杏仁（三钱） 水煎大半杯，热服，覆衣取微汗。
《经》曰∶冬伤于寒，春必病温。又曰∶冬不藏精，春必病温。
盖人于冬时，宜顺寒水之令，以藏阳气。倘阴精失藏，相火泄露，阳根不密，火旺水亏，津液被伤，及至春夏
受感，而温热之病作矣。其证与伤寒不同，伤寒初病，外虽受邪，而内本无热。温病初起，即内外俱热，其
头痛发热自汗，颇类伤寒，但伤寒必传阳明而始作渴，温病初起而即发热作渴，口燥心烦，且脉动数，不恶
寒，反恶热，午后热益甚，与伤寒颇异。如邪在六经之表，并未入腑入脏者，法宜清解以防风解温汤，随证加
减主之。但咳身不甚热者，以桑杏甘桔汤主之。如方入阳明之经，肺热津枯，法宜清热生津者，以人参白虎汤
主之。如已入阳明之府，肠胃燥结，法宜泄热滋阴者，以大承气汤加味主之。
防风解温汤
防风（三钱） 桔梗（三钱） 桑叶（三钱） 连翘（三钱） 杏仁（三钱） 芍药（三
钱） 丹皮（三钱） 甘草（二钱） 流水三杯，煎八分，温服，覆衣饮热粥，取微汗。治太阳经头项痛
，腰脊强，发热作渴者。如入阳明经，身热、目痛、鼻干、不卧、胸燥、口渴者，去防风、桑叶、桔梗、杏
仁，加葛根，热加元参，再热加石膏，呕加半夏。如入少阳经，胸胁疼痛，耳聋，口苦咽干作渴者，去防风、桑叶
、桔梗、杏仁，加柴胡、黄芩、半夏，热加元参。如入太阴经，腹满嗌干，发热作渴者，去连翘、桔梗、杏
仁，加生地。如入少阴经，口燥舌干，发热作渴者，去连翘、桔梗、杏仁、芍药，加生地、天冬、元参。如
入厥阴经，烦满囊缩，发热作渴者，去连翘、桔梗、杏仁，加生地、当归。
桑杏甘桔汤
桑叶（三钱） 杏仁（三钱） 麦冬（三钱） 桔梗（二钱） 紫菀（三钱） 甘草（
二钱） 半夏（三钱制） 茯苓（三钱） 水煎服。治温病初感，但咳嗽者。
人参白虎汤
石膏（四钱） 知母（三钱） 人参（三钱） 甘草（二钱） 生姜（三钱） 粳米（半
杯） 流水煎大半杯，热服，但取微汗。
治温病二日，方传阳明之经，腑热未作，法宜清热而发表者。
大承气加味汤
大黄（五钱生） 芒硝（三钱） 枳实（二钱炒） 浓朴（二钱炒） 芍药（三
钱） 生地（三钱） 流水煎大半杯，热服。治温病已入阳明之腑，肠胃燥结者。如肠胃未至燥结，第用滋阴
法，不用承气。即燥结未甚，亦当俟之六日经尽之后，腑热内实，用泄热滋阴之法，一下而清矣。若燥结已
甚，即三五日内，亦可急下。
感寒，是指感受风寒邪气。一年四季都有感寒的证候，脉象浮或紧，头痛、发热、无汗，或者恶寒，或者咳嗽不止，这就是病情较轻的伤寒。以桑防汤为主治方剂。这是当时世俗通用的治疗方法，病情重的仍然按照治疗伤寒的方法处理。
桑防汤
桑叶（三钱） 防风（三钱） 甘草（二钱） 白芍（三钱） 杏仁（三钱） 生姜（三钱片） 桔梗（二钱） 用水煎至大半杯，温服，盖好衣服取微汗。
伤风，是因为体内正气虚弱而受到外邪侵袭。患者肺经素有湿气，一旦风寒闭塞皮毛，肺气壅滞不通，出现流清鼻涕，时常打喷嚏，或者经过三五天，或者七天，咳出青黄色的鼻涕，性状像脓液，从口鼻排出，此时肺脏尚未受损，如果不出则肺脏受损而死。不要因为病轻就忽视它。以紫苏姜苓汤为主治方剂。
紫苏姜苓汤
苏叶（三钱） 生姜（三钱） 甘草（二钱） 茯苓（三钱） 橘皮（三钱） 砂仁（二钱） 半夏（三钱） 杏仁（三钱） 用水煎至大半杯，热服，盖好衣服取微汗。
《内经》说：冬天感受寒邪，春天必定发生温病。又说：冬天不能藏精，春天必定发生温病。
大概人在冬季，应当顺应寒水之令，来闭藏阳气。倘若阴精失于闭藏，相火泄露，阳根不固，导致火旺水亏，津液被损伤，等到春夏季节感受外邪，温热病就发作了。其证候与伤寒不同，伤寒初起，虽然外部受邪，但内部本来没有热。温病初起，即内外都热，其头痛、发热、自汗，颇类似伤寒，但伤寒必须传入阳明经才开始口渴，温病初起就发热口渴，口燥心烦，而且脉象动数，不恶寒，反而恶热，午后热势更甚，这与伤寒颇为不同。如果邪气在六经之表，并未进入腑脏，治法宜用清解法，以防风解温汤为主，随证加减使用。只是咳嗽、身体不甚热的，以桑杏甘桔汤为主治方剂。如果邪气传入阳明经，肺热津液枯竭，治法宜清热生津，以人参白虎汤为主治方剂。如果已经传入阳明之腑，肠胃干燥结滞，治法宜泄热滋阴，以大承气汤加味为主治方剂。
防风解温汤
防风（三钱） 桔梗（三钱） 桑叶（三钱） 连翘（三钱） 杏仁（三钱） 芍药（三钱） 丹皮（三钱） 甘草（二钱） 用流水三杯，煎至八分，温服，盖好衣服喝热粥，取微汗。治疗太阳经头项痛，腰脊强直，发热口渴者。如果传入阳明经，身热、目痛、鼻干、不能安卧、胸中燥、口渴者，去掉防风、桑叶、桔梗、杏仁，加入葛根，热重加元参，再热加石膏，呕吐加半夏。如果传入少阳经，胸胁疼痛，耳聋，口苦咽干口渴者，去掉防风、桑叶、桔梗、杏仁，加入柴胡、黄芩、半夏，热重加元参。如果传入太阴经，腹部胀满、咽喉干燥、发热口渴者，去掉连翘、桔梗、杏仁，加入生地。如果传入少阴经，口燥舌干、发热口渴者，去掉连翘、桔梗、杏仁、芍药，加入生地、天冬、元参。如果传入厥阴经，烦闷、囊缩、发热口渴者，去掉连翘、桔梗、杏仁，加入生地、当归。
桑杏甘桔汤
桑叶（三钱） 杏仁（三钱） 麦冬（三钱） 桔梗（二钱） 紫菀（三钱） 甘草（二钱） 半夏（三钱制） 茯苓（三钱） 用水煎服。治疗温病初感，仅咳嗽者。
人参白虎汤
石膏（四钱） 知母（三钱） 人参（三钱） 甘草（二钱） 生姜（三钱） 粳米（半杯） 用流水煎至大半杯，热服，只取微汗。
治疗温病第二天，刚传入阳明经，腑热未形成，治法宜清热而发表者。
大承气加味汤
大黄（五钱生） 芒硝（三钱） 枳实（二钱炒） 浓朴（二钱炒） 芍药（三钱） 生地（三钱） 用流水煎至大半杯，热服。治疗温病已传入阳明之腑，肠胃干燥结滞者。如果肠胃未到干燥结滞程度，只用滋阴法，不用承气汤。即使燥结不严重，也应当等待六日经气运行完毕之后，腑热内实，再用泄热滋阴之法，一下而清除了。如果燥结已经很严重，即使在三五日内，也可以急下。
Gan Han (Cold Invasion) refers to contracting Wind-Cold pathogens. There are cases of Gan Han throughout the four seasons, characterized by a floating or tight pulse, headache, fever, absence of sweating, aversion to cold, or uncontrolled coughing; this represents a mild form of Shang Han (Cold Damage). The primary formula is Sang Fang Tang (Mulberry Leaf and Saposhnikovia Decoction). This is the common method used in secular practice at that time; for severe cases, treatment should still follow the methods for Shang Han.
Sang Fang Tang (Mulberry Leaf and Sapothnikovia Decoction)
Morus Folium (Sang Ye, 桑叶) - 3 qian
Saposhnikoviae Radix (Fang Feng, 防风) - 3 qian
Glycyrrhizae Radix et Rhizoma (Gan Cao, 甘草) - 2 qian
Paeoniae Radix Alba (Bai Shao, 白芍) - 3 qian
Pruni Semen (Xing Ren, 杏仁) - 3 qian
Zingiberis Rhizoma Recens (Sheng Jiang, 生姜) - 3 qian slices
Platycodonis Radix (Jie Geng, 桔梗) - 2 qian
Decoct with water until half a cup remains, take warm, cover with clothing to induce slight sweating.
Shang Feng (Wind Strike) occurs due to internal deficiency allowing external pathogenic invasion. The patient typically has dampness in the Lung Meridian; when Wind-Cold closes the skin and hair pores, Lung Qi becomes obstructed. Symptoms include clear nasal discharge, frequent sneezing, and after three to five days or seven days, expectoration of greenish-yellow purulent-like sputum from the mouth and nose. At this stage, the Lung organ itself is not yet damaged; if the sputum does not exit, Lung damage will occur leading to death. Do not neglect it because the disease appears mild. The primary formula is Zi Su Jiang Ling Tang (Perilla, Ginger, and Poria Decoction).
Zi Su Jiang Ling Tang (Perilla, Ginger, and Poria Decoction)
Perillae Folium (Su Ye, 苏叶) - 3 qian
Zingiberis Rhizoma Recens (Sheng Jiang, 生姜) - 3 qian
Glycyrrhizae Radix et Rhizoma (Gan Cao, 甘草) - 2 qian
Poria (Fu Ling, 茯苓) - 3 qian
Citri Reticulatae Pericarpium (Ju Pi, 橘皮) - 3 qian
Amomi Fructus (Sha Ren, 砂仁) - 2 qian
Pinelliae Rhizoma Preparatum (Ban Xia, 半夏) - 3 qian
Pruni Semen (Xing Ren, 杏仁) - 3 qian
Decoct with water until half a cup remains, take hot, cover with clothing to induce slight sweating.
The Classics state: "If one is injured by Cold in winter, one will surely suffer from Warmth diseases in spring." It also states: "If one fails to store Essence in winter, one will surely suffer from Warmth diseases in spring."
Generally, during winter, humans should comply with the command of Cold-Water to store Yang Qi. If Yin Essence fails to be stored, Ministerial Fire leaks out, the root of Yang is not secure, leading to excessive Fire and deficient Water, damaging Body Fluids. When exposed to pathogens in spring and summer, Warm-Heat diseases arise. These symptoms differ from Shang Han. In early Shang Han, although external pathogens are present, there is no internal Heat initially. In early Warm diseases, both interior and exterior are hot. Headache, fever, and spontaneous sweating resemble Shang Han, but thirst only begins in Shang Han when it transmits to the Yangming channel, whereas in Warm diseases, fever and thirst appear immediately upon onset, accompanied by dry mouth, mental restlessness, rapid and agitated pulse, aversion to heat rather than cold, and worsening heat in the afternoon, which differs significantly from Shang Han. If the pathogen is on the surface of the Six Channels and has not entered the Fu or Zang organs, the treatment principle is clearing and resolving using Fang Feng Jie Wen Tang (Saposhnikovia and Wind-Resolving Decoction), modified according to symptoms. For cases with only cough and mild body heat, use Sang Xing Gan Jie Tang (Mulberry Leaf, Apricot Kernel, Licorice, and Platycodon Decoction). If the pathogen enters the Yangming channel, causing Lung Heat and fluid exhaustion, the principle is clearing Heat and generating fluids, using Ren Shen Bai Hu Tang (Ginseng and White Tiger Decoction). If it has entered the Yangming Fu organs, causing dryness and constipation in the intestines and stomach, the principle is purging Heat and nourishing Yin, using Da Cheng Qi Tang (Major Order the Qi Decoction) with modifications.
Fang Feng Jie Wen Tang (Saposhnikovia and Wind-Resolving Decoction)
Saposhnikoviae Radix (Fang Feng, 防风) - 3 qian
Platycodonis Radix (Jie Geng, 桔梗) - 3 qian
Morus Folium (Sang Ye, 桑叶) - 3 qian
Forsythiae Fructum (Lian Qiao, 连翘) - 3 qian
Pruni Semen (Xing Ren, 杏仁) - 3 qian
Paeoniae Radix (Shao Yao, 芍药) - 3 qian
Moutan Cortex (Dan Pi, 丹皮) - 3 qian
Glycyrrhizae Radix et Rhizoma (Gan Cao, 甘草) - 2 qian
Decoct three cups of running water to eight parts, take warm, cover with clothing and drink hot porridge to induce slight sweating. Treats headache and neck pain, stiff back and spine, fever, and thirst associated with the Taiyang channel. If entering the Yangming channel, with body heat, eye pain, dry nose, inability to sleep, chest dryness, and thirst, remove Fang Feng, Sang Ye, Jie Geng, Xing Ren; add Radix Puerariae Lobatae (Ge Gen, 葛根); if heat is severe, add Radix Scrophulariae (Yuan Shen, 元参); if heat is even more severe, add Gypsum Fibrosum (Shi Gao, 石膏); if vomiting occurs, add Pinelliae Rhizoma Preparatum (Ban Xia, 半夏). If entering the Shaoyang channel, with chest and hypochondriac pain, deafness, bitter taste in mouth, dry throat, and thirst, remove Fang Feng, Sang Ye, Jie Geng, Xing Ren; add Bupleuri Radix (Chai Hu, 柴胡), Scutellariae Radix (Huang Qin, 黄芩), Ban Xia; if heat is severe, add Yuan Shen. If entering the Taiyin channel, with abdominal fullness, dry throat, fever, and thirst, remove Lian Qiao, Jie Geng, Xing Ren; add Rehmanniae Radix Preparata (Sheng Di, 生地). If entering the Shaoyin channel, with dry mouth and tongue, fever, and thirst, remove Lian Qiao, Jie Geng, Xing Ren, Shao Yao; add Sheng Di, Asparagi Radix (Tian Dong, 天冬), Yuan Shen. If entering the Jueyin channel, with irritability, fullness, retraction of the testicles, fever, and thirst, remove Lian Qiao, Jie Geng, Xing Ren; add Sheng Di, Angelicae Sinensis Radix (Dang Gui, 当归).
Sang Xing Gan Jie Tang (Mulberry Leaf, Apricot Kernel, Licorice, and Platycodon Decoction)
Morus Folium (Sang Ye, 桑叶) - 3 qian
Pruni Semen (Xing Ren, 杏仁) - 3 qian
Ophiopogonis Tuber (Mai Dong, 麦冬) - 3 qian
Platycodonis Radix (Jie Geng, 桔梗) - 2 qian
Asteris Radix (Zi Wan, 紫菀) - 3 qian
Glycyrrhizae Radix et Rhizoma (Gan Cao, 甘草) - 2 qian
Pinelliae Rhizoma Preparatum (Ban Xia, 半夏) - 3 qian processed
Poria (Fu Ling, 茯苓) - 3 qian
Decoct with water and take. Treats early-stage Warm diseases presenting only with cough.
Ren Shen Bai Hu Tang (Ginseng and White Tiger Decoction)
Gypsum Fibrosum (Shi Gao, 石膏) - 4 qian
Anemarrhenae Rhizoma (Zhi Mu, 知母) - 3 qian
Ginseng Radix (Ren Shen, 人参) - 3 qian
Glycyrrhizae Radix et Rhizoma (Gan Cao, 甘草) - 2 qian
Zingiberis Rhizoma Recens (Sheng Jiang, 生姜) - 3 qian
Oriza Sativa Granum (Jing Mi, 粳米) - half cup
Decoct with running water until half a cup remains, take hot, induce only slight sweating.
Treats Warm disease on the second day, just transmitted to the Yangming channel, where Fu-organ heat has not yet formed; the principle is to clear Heat and release the exterior.
Da Cheng Qi Tang Modified (Major Order the Qi Decoction with Additions)
Rhei Radix et Rhizoma (Da Huang, 大黄) - 5 qian raw
Natrii Sulfas (Mang Xiao, 芒硝) - 3 qian
Immaturus Citri Grandis Fructus (Zhi Shi, 枳实) - 2 qian stir-fried
Magnoliae Officinalis Cortex (Mu Hou, 浓朴) - 2 qian stir-fried
Paeoniae Radix (Shao Yao, 芍药) - 3 qian
Rehmanniae Radix Preparata (Sheng Di, 生地) - 3 qian
Decoct with running water until half a cup remains, take hot. Treats Warm disease that has entered the Yangming Fu organs, causing dryness and constipation in the intestines and stomach. If the intestines and stomach have not reached a state of dryness and constipation, use only the method of nourishing Yin, do not use Cheng Qi formulas. Even if constipation is not severe, wait until after the six-day cycle of the channels is complete, when internal Fu-heat is solidified, then use purging Heat and nourishing Yin methods to clear it with one purge. If constipation is very severe, urgent purging may be performed within three to five days.