论曰伤寒病手足逆冷，其名曰厥，此因阳气衰阴气盛，阴胜则阳脉逆而不通于四肢，所
以逆冷。其证令人恶寒，不饮水，下利清谷，或清便自调，或小便数，外证默静，是其候也。
宜温之灸之，若灸之而手足不温者，为难治，然厥亦有热者，先发热而后厥。热深厥亦深，
热微厥亦微，脉虽沉伏，按之当滑，若或畏热，或饮水，或扬手掷足，烦躁不得眠，大便秘，
小便赤，外证昏愦者，虽厥不可温也，宜下之。
治伤寒手足厥逆，微喘脉不出。通脉四逆汤方
附子（炮裂去皮脐半两） 干姜（炮裂一两半） 人参（一两） 甘草（一两炙）
上四味，各锉如麻豆，每服五钱匕，水一盏半，煎至八分，去滓温服。
治伤寒手足厥寒，脉细欲绝。当归四逆汤方
当归（切焙） 桂（去粗皮） 芍药 细辛（去苗叶各一两） 木通 甘草（炙各七钱）
上六味，锉如麻豆，每服五钱匕，水一盏半，枣二枚劈破，煎至八分，去滓温服。
治伤寒下利清谷，里寒外热，汗出而厥，腹痛兼呕。芍药汤方
芍药（一两） 附子（炮裂去皮脐三分） 人参 甘草（炙各半两）
上四味，锉如麻豆，每服五钱匕，水一盏半，入生姜半分拍碎，同煎至八分。去滓温服，
日晚再服。
治伤寒手足厥冷，脉细欲绝者。吴茱萸汤方
吴茱萸（汤淘三遍焙干炒） 当归（切焙） 芍药（各一两） 甘草（炙三分） 干姜
（炮裂半两） 桂（去粗皮一两） 辛（去苗叶三分）
上七味，粗捣筛，每服五钱匕，水一盏，酒半盏，枣三枚劈破，同煎至八分，去滓温服。
治伤寒手足厥冷，汗出脉微。白术汤方
白术（一两） 人参（三分） 桂（去粗皮） 干姜（炮裂） 附子（炮裂去皮脐各半
两） 甘草（三分炙）
上六味，锉如麻豆，每服五钱匕，水一盏半，煎至一盏，去滓温服。
治伤寒四肢厥冷，又下利恶寒。附子汤方
附子（炮裂去皮脐半两） 甘草（炙） 干姜（炮裂） 芍药（各一两）
上四味，锉如麻豆，每服五钱匕，水一盏半，煎至一盏，去滓温服。
治伤寒里寒外热，手足多厥。人参汤方
人参 白术（各一两） 细辛（去苗叶） 干姜（炮裂各三分） 甘草（半两炙）
上五味，粗捣筛，每服五钱匕，水一盏半，煎至一盏，去滓食前温服。
治伤寒四逆。阳起石丸方
阳起石 太阴玄精石 硝石 附子（炮裂去皮脐等分）
上四味，捣研为细末，汤浸蒸饼和丸，如梧桐子大，每服五丸至十丸，新汲水下，汗出
解。
治伤寒手足厥冷，脉沉细。正阳丸方
硫黄（一两） 硝石（一两） 太阴玄精石（半两）
上三味，细研，入瓷瓶子内，瓦子塞口，黄泥固济阴干，以炭火一斤，养令火尽，放冷
出药，研如粉，酒煮面糊和丸，如梧桐子大，每服十五丸至二十丸。热酒下，不计时候。
治气虚阳脱，体冷无脉，气息欲绝，不省人事，及伤寒阴厥，百药不效者，葱熨法
葱（一斤水洗净）
上以麻缕缠如盏许大，切去根及叶，惟存白长二寸许，如大饼 ，先以火 一面令通热，
乃以热处放在病患脐中连脐下，其上以熨斗满贮火熨之，令葱饼中热气入肌肉中，须预作三
四饼子，一饼坏不可熨，又易一饼，良久病患当渐醒，手足温有汗，更服四逆汤辈温其内，
即瘥。
Discourse states: In the disease of Shanghan (Cold Damage), when the hands and feet are cold in a reverse manner, this condition is named "Jue" (Reversal Cold). This occurs because Yang Qi is deficient and Yin Qi is excessive. When Yin prevails, the Yang meridians become reversed and fail to circulate to the four limbs, resulting in reverse coldness. The manifestations include aversion to cold, lack of desire for water, diarrhea with undigested food, or normal bowel movements, or frequent urination. Externally, the patient appears quiet and still; these are the signs of this syndrome. It is appropriate to treat with warming methods and moxibustion. If the hands and feet remain cold after moxibustion, it is considered difficult to treat. However, Jue can also present as a heat syndrome, characterized by fever preceding the cold extremities. The deeper the heat, the deeper the cold reversal; the slighter the heat, the slighter the cold reversal. Although the pulse may be deep and hidden, palpation should reveal a slippery quality. If there is fear of heat, desire for water, tossing arms and legs, restlessness, insomnia, constipation, dark urine, and external signs of confusion, even though it presents as Jue, warming methods are contraindicated, and purgative methods are appropriate.
For treating Shanghan causing reverse coldness of hands and feet, accompanied by slight wheezing and absent or faint pulse. Tongmai Sini Decoction Formula:
Fuzi (Aconiti Lateralis Radix Praeparata, prepared until cracked, skin and umbilicus removed, half liang) Ganjiang (Zingiberis Rhizoma, prepared until cracked, one and a half liang) Renshen (Ginseng Radix, one liang) Gancao (Glycyrrhizae Radix et Rhizoma, honey-fried, one liang)
The above four ingredients are each chopped like hemp seeds. Each dose consists of five qian bi, boiled in one and a half zhan of water until reduced to eight parts. Strain and take warm.
For treating Shanghan causing cold extremities of hands and feet, with fine pulse nearly imperceptible. Danggui Sini Decoction Formula:
Danggui (Angelicae Sinensis Radix, sliced and baked) Guizhi (Cinnamomi Ramulus, coarse bark removed) Shaoyao (Paeoniae Radix) Xixin (Asari Radix et Rhizoma, seedlings and leaves removed, one liang each) Mutong (Akebiae Caulis) Gancao (Glycyrrhizae Radix et Rhizoma, honey-fried, seven qian each)
The above six ingredients are chopped like hemp seeds. Each dose consists of five qian bi, boiled in one and a half zhan of water with two jujubes split open, until reduced to eight parts. Strain and take warm.
For treating Shanghan causing diarrhea with undigested food, interior cold with exterior heat, sweating with cold extremities, abdominal pain combined with vomiting. Shaoyao Decoction Formula:
Shaoyao (Paeoniae Radix, one liang) Fuzi (Aconiti Lateralis Radix Praeparata, prepared until cracked, skin and umbilicus removed, three fen) Renshen (Ginseng Radix) Gancao (Glycyrrhizae Radix et Rhizoma, honey-fried, half liang each)
The above four ingredients are chopped like hemp seeds. Each dose consists of five qian bi, boiled in one and a half zhan of water with half a fen of fresh ginger smashed, together until reduced to eight parts. Strain and take warm. Take again in the evening.
For treating Shanghan causing cold extremities of hands and feet, with fine pulse nearly imperceptible. Wuzhuyu Decoction Formula:
Wuzhuyu (Evodiae Fructus, rinsed three times with decoction, baked dry and stir-fried) Danggui (Angelicae Sinensis Radix, sliced and baked) Shaoyao (Paeoniae Radix, one liang each) Gancao (Glycyrrhizae Radix et Rhizoma, honey-fried, three fen) Ganjiang (Zingiberis Rhizoma, prepared until cracked, half liang) Guizhi (Cinnamomi Ramulus, coarse bark removed, one liang) Xixin (Asari Radix et Rhizoma, seedlings and leaves removed, three fen)
The above seven ingredients are coarsely crushed and sifted. Each dose consists of five qian bi, boiled in one zhan of water and half a zhan of wine with three jujubes split open, together until reduced to eight parts. Strain and take warm.
For treating Shanghan causing cold extremities of hands and feet, sweating, and faint pulse. Baizhu Decoction Formula:
Baizhu (Atractylodis Macrocephalae Rhizoma, one liang) Renshen (Ginseng Radix, three fen) Guizhi (Cinnamomi Ramulus, coarse bark removed) Ganjiang (Zingiberis Rhizoma, prepared until cracked) Fuzi (Aconiti Lateralis Radix Praeparata, prepared until cracked, skin and umbilicus removed, half liang each) Gancao (Glycyrrhizae Radix et Rhizoma, honey-fried, three fen)
The above six ingredients are chopped like hemp seeds. Each dose consists of five qian bi, boiled in one and a half zhan of water until reduced to one zhan. Strain and take warm.
For treating Shanghan causing coldness of four limbs, accompanied by diarrhea and aversion to cold. Fuzi Decoction Formula:
Fuzi (Aconiti Lateralis Radix Praeparata, prepared until cracked, skin and umbilicus removed, half liang) Gancao (Glycyrrhizae Radix et Rhizoma, honey-fried) Ganjiang (Zingiberis Rhizoma, prepared until cracked) Shaoyao (Paeoniae Radix, one liang each)
The above four ingredients are chopped like hemp seeds. Each dose consists of five qian bi, boiled in one and a half zhan of water until reduced to one zhan. Strain and take warm.
For treating Shanghan causing interior cold with exterior heat, and frequent cold extremities. Renshen Decoction Formula:
Renshen (Ginseng Radix) Baizhu (Atractylodis Macrocephalae Rhizoma, one liang each) Xixin (Asari Radix et Rhizoma, seedlings and leaves removed) Ganjiang (Zingiberis Rhizoma, prepared until cracked, three fen each) Gancao (Glycyrrhizae Radix et Rhizoma, honey-fried, half liang)
The above five ingredients are coarsely crushed and sifted. Each dose consists of five qian bi, boiled in one and a half zhan of water until reduced to one zhan. Strain and take warm before meals.
For treating Shanghan Sini Syndrome. Yangqishi Pill Formula:
Yangqishi (Stellatitum) Taiyin Xuanjingshi (Selenitum) Xiaoshi (Natrii Sulfas) Fuzi (Aconiti Lateralis Radix Praeparata, prepared until cracked, skin and umbilicus removed, equal parts)
The above four ingredients are pounded and ground into fine powder. Mix with steamed dough soaked in hot water to form pills the size of paulownia seeds. Each dose is five to ten pills, taken with newly drawn cold water. Perspiration indicates resolution.
For treating Shanghan causing cold extremities of hands and feet, with deep and fine pulse. Zhengyang Pill Formula:
Liuhuang (Sulfur, one liang) Xiaoshi (Natrii Sulfas, one liang) Taiyin Xuanjingshi (Selenitum, half liang)
The above three ingredients are finely ground, placed in a porcelain bottle, sealed with a tile lid, and secured with yellow mud. Dry in shade. Roast with one jin of charcoal until the fire extinguishes naturally. Allow to cool, remove the medicine, and grind into powder. Mix with flour paste boiled in wine to form pills the size of paulownia seeds. Each dose is fifteen to twenty pills, taken with hot wine at any time.
For treating deficiency of Qi and collapse of Yang, characterized by cold body, absence of pulse, impending cessation of breath, unconsciousness, as well as Yin Jue from Shanghan unresponsive to various medicines, use the Scallion Moxibustion Method:
Congbai (Allii Fistulosi Bulbus, one jin, washed clean)
Tie the scallions with hemp thread into bundles about the size of a cup. Cut off roots and leaves, retaining only the white part, approximately two cun long, forming a cake-like shape. Heat one side over fire until thoroughly hot. Place the heated side on the patient's navel and below. Cover the top with a moxibustion iron filled with burning charcoal. Ensure the heat from the scallion cake penetrates into the muscles. Prepare three or four such cakes in advance; replace a cake if it becomes ineffective. After some time, the patient should gradually regain consciousness, with warm hands and feet and perspiration. Subsequently, administer Sini Decoction or similar formulas to warm the interior, leading to recovery.