〔大〕客热者，因体虚而将温过度，外热加之，非脏腑自生，故云客热。其状上焦
胸膈之间虚热，口燥心烦，手足壮热者是也。
〔薛〕前证若客邪所侵，用补中益气加川芎、防风。肝虚血少，六味地黄丸，胃火
饮冷，钱氏泻黄散。胃虚饮汤，七味白术散。潮热时热，八珍汤。晡热内热，逍遥散。发
热体倦，补中益气汤。恚怒发热，小柴胡汤。郁怒发热，加味归脾汤。寅卯酉戌时热，升
阳益胃汤。
〔大〕麦门冬散 治妇人客热，四肢烦闷疼痛，饮食不下。
麦门冬 赤茯苓 赤芍药 柴胡（各一钱半） 桑白皮 生地黄 黄 羚羊角屑（各一
钱） 甘草（半钱）
上作一服，水二盅，生姜三片，煎至一盅，不拘时服。
犀角散 治妇人客热，四肢烦闷疼痛，饮食不下。
犀角屑 赤芍药 地骨皮 赤茯苓 红花 人参 枳壳 麦门冬（各一钱） 柴胡（二钱）
黄（二钱半） 甘草（半钱）
上作一服，水二盅，生姜三片，煎至一盅，不拘时服。
黄 饮 治妇人客热，心胸壅闷，肢节烦疼，不思饮食。
黄 生地黄（各二钱） 人参 茯神（炒）
犀角屑 栝蒌仁 黄芩（各一钱） 甘草（半钱）
上作一服，水二盅，淡竹叶五片，煎至一盅，不拘时服。
丹砂散 治妇人客热，心神烦躁，口干舌涩，饮食无味。
丹砂（一两，细研，水飞过） 犀角屑 天竺黄 胡黄连（各半两） 麦门冬（去心焙，二两）
寒水石（细研） 马牙硝（细研，各一分） 铅霜（半两，细研）
上为细末，入研了药和匀，每以竹叶汤调下一钱，无时。
玉霜散 治妇人客热，烦渴头痛，痰涌如泉。
石膏（二两，细研，水飞过） 寒水石（一两，细研）
上和匀，每以生地黄汁调下一钱，无时。
生干地黄丸 治妇人客热，面赤头疼，口舌生疮，心胸烦壅，饮食无味。
生干地黄（一两） 羚羊角屑 白鲜皮 葳蕤（各半两） 黄连（去须，七钱半）
黄（炙微赤，半两） 麦门冬（二两，去心焙） 玄参 犀角屑 地骨皮 甘草（炙微赤，各半两）
川大黄（一两）
上为细末，炼蜜和捣二三百杵，丸如梧桐子大。每以温水下三十丸，无时。
败毒散 治妇人客热，四肢烦闷疼痛，不思饮食。甚者可加地骨皮、黄芩。（方见杂病伤湿。）
【戴元礼】所谓客热，是因为身体虚弱时过度使用温补药物，外加热邪侵袭所致，并非脏腑自身产生的热邪，所以称为客热。其症状表现为上焦胸膈之间感到虚热，口干舌燥，心烦意乱，手足高热等。
【薛己】上述病症若由外邪侵袭引起，可用补中益气汤加入川芎、防风治疗。若是肝虚血少，用六味地黄丸；胃火旺盛且喜饮冷物，用钱氏泻黄散；胃气虚弱且喜饮汤水，用七味白术散；出现潮热或定时发热，用八珍汤；午后（晡时）发热及内热，用逍遥散；发热伴身体疲倦，用补中益气汤；因愤怒而发热，用小柴胡汤；因郁结愤怒而发热，用加味归脾汤；在寅、卯、酉、戌时辰发热，用升阳益胃汤。
【戴元礼】麦门冬散：治疗妇人客热症，四肢烦闷疼痛，饮食无法下咽。
药材组成：麦门冬、赤茯苓、赤芍药、柴胡（各一钱半）；桑白皮、生地黄、黄芪、羚羊角屑（各一钱）；甘草（半钱）。
制法与用法：以上为一剂用量，加水两盅，生姜三片，煎煮至一盅，不拘泥时间服用。
犀角散：治疗妇人客热症，四肢烦闷疼痛，饮食无法下咽。
药材组成：犀角屑、赤芍药、地骨皮、赤茯苓、红花、人参、枳壳、麦门冬（各一钱）；柴胡（二钱）；黄芪（二钱半）；甘草（半钱）。
制法与用法：以上为一剂用量，加水两盅，生姜三片，煎煮至一盅，不拘泥时间服用。
黄芪饮：治疗妇人客热症，心胸壅塞闷痛，肢节烦疼，不思饮食。
药材组成：黄芪、生地黄（各二钱）；人参、茯神（炒制）、犀角屑、栝蒌仁、黄芩（各一钱）；甘草（半钱）。
制法与用法：以上为一剂用量，加水两盅，淡竹叶五片，煎煮至一盅，不拘泥时间服用。
丹砂散：治疗妇人客热症，心神烦躁，口干舌涩，饮食无味。
药材组成：丹砂（一两，细研，用水飞法处理）、犀角屑、天竺黄、胡黄连（各半两）；麦门冬（去心焙干，二两）；寒水石（细研）、马牙硝（细研，各一分）；铅霜（半两，细研）。
制法与用法：以上药物研为细末，将已研好的药物混合均匀，每次取一钱，用竹叶汤调服，不拘泥时间。
玉霜散：治疗妇人客热症，烦渴头痛，痰涌如泉。
药材组成：石膏（二两，细研，用水飞法处理）、寒水石（一两，细研）。
制法与用法：以上药物混合均匀，每次取一钱，用生地黄汁调服，不拘泥时间。
生干地黄丸：治疗妇人客热症，面红头痛，口舌生疮，心胸烦闷壅滞，饮食无味。
药材组成：生干地黄（一两）；羚羊角屑、白鲜皮、葳蕤（各半两）；黄连（去须，七钱半）；黄芪（炙微赤，半两）；麦门冬（二两，去心焙干）；玄参、犀角屑、地骨皮、甘草（炙微赤，各半两）；川大黄（一两）。
制法与用法：以上药物研为细末，用炼蜜调和并捣杵二三百下，制成梧桐子大小的丸剂。每次用温水送服三十丸，不拘泥时间。
[Dai Yuanli] "Ke Re" (Guest Heat) refers to heat caused by excessive use of warming and tonifying treatments in a body that is already deficient, combined with external heat pathogens. It does not originate from the internal organs themselves, hence it is termed "Guest Heat." Its manifestations include a sensation of deficiency-heat in the upper jiao (Upper Burner), specifically between the chest and diaphragm, dry mouth, irritability, and intense heat in the hands and feet.
[Xue Ji] For the aforementioned conditions: if caused by invasion of external pathogens, use Buzhong Yiqi Tang (Tonify the Middle and Augment the Qi Decoction) with Chuanxiong Rhizoma (Chuanxiong) and Fangfeng Radix Saposhnikoviae (Fangfeng). If due to Liver deficiency and blood insufficiency, use Liuwei Dihuang Wan (Six-Ingredient Pill with Rehmannia). If there is Stomach fire accompanied by a preference for cold drinks, use Qian's Xiehuang San (Drain the Spleen Powder). If there is Stomach deficiency accompanied by a preference for warm soups, use Qiwei Baizhu San (Seven-Ingredient Atractylodes Macrocephala Powder). For tidal fever or periodic fever, use Bazhen Tang (Eight-Treasure Decoction). For afternoon fever (occurring during the You hour) and internal heat, use Xiaoyao San (Free and Easy Wanderer Powder). For fever accompanied by physical fatigue, use Buzhong Yiqi Tang (Tonify the Middle and Augment the Qi Decoction). For fever arising from anger, use Xiao Chaihu Tang (Minor Bupleurum Decoction). For fever arising from depression and anger, use Jiaweigui Pi Tang (Modified Gui Pi Decoction). For fever occurring at the Yin, Mao, You, and Xu hours, use Shengyang Yiwet Tang (Raise Yang and Benefit the Stomach Decoction).
[Dai Yuanli] Maimendong San (Ophiopogon Powder): Treats female patients with Ke Re (Guest Heat), characterized by vexation, fullness, pain in the four limbs, and inability to eat.
Ingredients: Maimendong Radix Ophiopogonis (1.5 qian), Chi Fuling Poria Cocos cum Ligno (1.5 qian), Chi Shaoyao Radix Paeoniae Rubra (1.5 qian), Chaihu Radix Bupleuri (1.5 qian); Sangbaipi Cortex Mori Radicis (1 qian), Shengdihuang Radix Rehmanniae Recens (1 qian), Huangqi Radix Astragali (1 qian), Lingyangjiaoxu Horn Saigantae Tataricae (1 qian); Gancao Radix Glycyrrhizae Preparata (0.5 qian).
Preparation and Administration: These constitute one dose. Add two zhong of water and three slices of fresh ginger. Decoct until one zhong remains. Take at any time.
Xijiao San (Rhinoceros Horn Powder): Treats female patients with Ke Re (Guest Heat), characterized by vexation, fullness, pain in the four limbs, and inability to eat.
Ingredients: Xijiaoxu Cornu Rhinocerotis (1 qian), Chi Shaoyao Radix Paeoniae Rubra (1 qian), Digupi Cortex Lycii Radicis (1 qian), Chi Fuling Poria Cocos cum Ligno (1 qian), Honghua Flos Carthami Tinctorii (1 qian), Renshen Radix Ginseng (1 qian), Zhike Fructus Aurantii Immaturus (1 qian), Maimendong Radix Ophiopogonis (1 qian); Chaihu Radix Bupleuri (2 qian), Huangqi Radix Astragali (2.5 qian), Gancao Radix Glycyrrhizae Preparata (0.5 qian).
Preparation and Administration: These constitute one dose. Add two zhong of water and three slices of fresh ginger. Decoct until one zhong remains. Take at any time.
Huangqi Yin (Astragalus Drink): Treats female patients with Ke Re (Guest Heat), characterized by oppression and fullness in the chest and heart, vexation and pain in the joints, and lack of appetite.
Ingredients: Huangqi Radix Astragali (2 qian), Shengdihuang Radix Rehmanniae Recens (2 qian); Renshen Radix Ginseng, Fushen Poria Cocos cum Silkworm (stir-fried) (1 qian each); Xijiaoxu Cornu Rhinocerotis, Gualouren Semen Trichosanthis (1 qian each), Huangqin Radix Scutellariae (1 qian), Gancao Radix Glycyrrhizae Preparata (0.5 qian).
Preparation and Administration: These constitute one dose. Add two zhong of water and five leaves of Danzhuye Folium Phyllostachidis Viridis. Decoct until one zhong remains. Take at any time.
Dansha San (Cinnabar Powder): Treats female patients with Ke Re (Guest Heat), characterized by mental restlessness and irritability, dry mouth and stiff tongue, and loss of taste in food.
Ingredients: Dansha Cinabrium (1 liang, finely ground, processed by water flotation); Xijiaoxu Cornu Rhinocerotis, Tianzhuhuang Resina Calami (0.5 liang each), Huhuanglian Rhizoma Coptidis (0.5 liang); Maimendong Radix Ophiopogonis (decored and baked, 2 liang); Hanshui Shi Natroaluminosilicate (finely ground), Mayaxiao Natrii Sulfas (finely ground, 1 fen each); Qianshuang Plumbum Carbonicum (0.5 liang, finely ground).
Preparation and Administration: Grind all ingredients into a fine powder and mix thoroughly. Take 1 qian each time, mixed with Zhu Ye Tang (Bamboo Leaf Decoction), at any time.
Yushuang San (Jade Frost Powder): Treats female patients with Ke Re (Guest Heat), characterized by vexation, thirst, headache, and profuse phlegm secretion like a spring.
Ingredients: Shigypsum Fibrosum (2 liang, finely ground, processed by water flotation), Hanshui Shi Natroaluminosilicate (1 liang, finely ground).
Preparation and Administration: Mix evenly. Take 1 qian each time, mixed with Shengdihuangzhi Juice of Rehmanniae Recens, at any time.
Shenggan Dihuang Wan (Dried Rehmannia Pill): Treats female patients with Ke Re (Guest Heat), characterized by red face, headache, sores in the mouth and tongue, vexation and oppression in the chest and heart, and loss of taste in food.
Ingredients: Shenggan Dihuang Radix Rehmanniae Preparata (1 liang); Lingyangjiaoxu Horn Saigantae Tataricae, Baixianpi Cortex Dictamni (0.5 liang each); Huanglian Rhizoma Coptidis (decored, 7.5 qian); Huangqi Radix Astragali (stir-baked until slightly red, 0.5 liang); Maimendong Radix Ophiopogonis (decored and baked, 2 liang); Xuanshen Radix Scrophulariae, Xijiaoxu Cornu Rhinocerotis, Digupi Cortex Lycii Radicis, Gancao Radix Glycyrrhizae Preparata (stir-baked until slightly red, 0.5 liang each); Chuan Dahuang Radix et Rhizoma Rhei (1 liang).
Preparation and Administration: Grind into a fine powder. Mix with refined honey, pound and knead 200-300 times, and form pills the size of paulownia seeds. Take 30 pills each time with warm water, at any time.
Baidu San (Defeat Poison Powder): Treats female patients with Ke Re (Guest Heat), characterized by vexation, fullness, pain in the four limbs, and lack of appetite. In severe cases, add Digupi Cortex Lycii Radicis and Huangqin Radix Scutellariae. (See the section on Miscellaneous Diseases: Injury by Dampness for the formula.)