【歌】劳热神思多困倦，客邪口燥及心烦，内伤有瘀成潮热，外感无时热又温，平昔经前实积看，去多经后
作虚论，实宜清解虚温补，寒热谵言另立门。
【论】王太仆曰∶如大寒而甚，热之不热，是无火也。热来复去，昼见夜伏，夜发昼止，是无火也，当治其
心。如大热而甚，寒之不寒，是无水也，当助其肾。心盛则生热，肾盛则生寒，肾虚则寒动于中，心虚则热伏于内。
李氏曰∶潮热有时为内伤、为虚热，无时为外感、为实。虚者，大温经汤。实者，四物汤加柴胡、黄芩。经闭者，
滋血汤。骨蒸者，大胡连丸、乌鸡丸。五心烦热，四物加胡连、川连。无汗者，茯苓补心汤。有汗者，加味逍遥散。
【脉】洪数有力是为实热，细数无力即是虚热。浮主外邪，沉乃里热，表里虚实，以此分别，脏腑经络，具
在脉诀。
平时发热
平时发热必偏阳，人瘦阴虚火自狂，能戒五辛如淡食，胜如煎服地黄汤。
临经发热
血去阴虚内热生，口干烦躁不和平，行过初至须分治，客实虚潮另有名。
劳热
因劳发热为劳热，肢体酸痛盗汗多，烦躁不宁神困倦，急投良剂免沉 。午前热属气分，清心莲子饮。午后
热属阴分，地黄汤。若劳心者，天王补心丹。劳力者，加味逍遥散。
客热
客热皆由元气虚，卫家浅薄外邪居，心烦口渴肌肤燥，加味逍遥治有余。《良方》曰∶经行体虚，温暖过度，
外邪乘之，故曰客热，其状上焦胸膈之间虚热，口燥心烦，手足壮热是也。
潮热
要知潮热阳明实，热至如潮不失期，若是太冲停瘀血，桃仁承气可行之。
实热
脉洪有力名为实，热在先前经未行，便闭唇焦兼口渴，可煎玉烛把衣更。
虚热
脉来无力便知虚，阴不足兮气有余，必是去多经水后，六神补血自能除。
寒热
寒热虽云外中风，阴虚阳弱不相同，更寻气血分虚实，寒热交争又一宗。经曰∶阳虚则恶寒，阴虚则发热，阳不
足则先寒后热，阴不足则先热后寒。阴阳不调之，故当分气血虚实治之。寸口脉微为阳不足，则阴气上入于阳中，宜
补中益气汤。尺部脉弱为阴不足，则阳气下陷于阴中，宜益阴地黄丸。若怒动肝火者，小柴胡汤。寒热交争，生地黄丸。
[Verse]
Heat due to overwork is often accompanied by mental fatigue and drowsiness;
External pathogenic heat causes dry mouth and irritability;
Internal injury with blood stasis leads to tidal fever;
External contraction fever has no fixed time, with fluctuating temperatures;
If there is excess accumulation before menstruation, it must be examined carefully;
Excessive bleeding after menstruation should be treated as deficiency;
Excess patterns are suitable for clearing heat and resolving the exterior, while deficiency patterns are suitable for warming and tonifying;
Chills, high fever, and delirium are discussed in a separate category.
[Discussion]
Wang Taipu said: If there is severe cold that does not respond to warming treatment, it indicates a lack of Mingmen Fire (Mingmen Fire Deficiency), and the Heart should be treated. If fever comes and goes unpredictably, appearing during the day and hiding at night, or occurring at night and stopping during the day, this also indicates a lack of Mingmen Fire (Mingmen Fire Deficiency), and the Heart should be treated. If there is extreme heat that does not respond to cooling treatment, it indicates Kidney Yin Deficiency (Kidney Water Deficiency), and the Kidneys should be assisted. Exuberant Heart Qi generates heat, exuberant Kidney Qi generates cold, Kidney Deficiency causes cold to move within the Middle Jiao, and Heart Deficiency causes heat to hide internally.
Li Shi said: Tidal fever with a fixed time belongs to internal injury and deficiency heat; fever without a fixed time belongs to external contraction and excess heat. For deficiency patterns, use Da Wen Jing Tang (Great Warming of the Menses Decoction). For excess patterns, use Si Wu Tang (Four Substances Decoction) added with Chai Hu (Bupleuri Radix) and Huang Qin (Scutellariae Radix). For amenorrhea, use Zi Xue Tang (Nourishing Blood Decoction). For bone-steaming fever, use Da Hu Lian Wan (Great Coptis Pill) and Wu Ji Wan (Black Chicken Pill). For five-palm heat (heat sensation in palms, soles, and chest), use Si Wu Tang added with Hu Lian (Coptidis Rhizoma) and Chuan Lian (Coptidis Rhizoma). For those without sweat, use Fu Ling Bu Xin Tang (Poria Nourishing Heart Decoction). For those with sweat, use Jia Wei Xiao Yao San (Modified Free and Easy Wanderer Powder).
[Pulse Diagnosis]
A pulse that is surging, rapid, and forceful indicates excess heat;
A pulse that is fine, rapid, and weak indicates deficiency heat.
A floating pulse governs external pathogens, while a deep pulse governs interior heat; through the pulse, exterior/interior and excess/deficiency can be distinguished. The diseases of zang-fu organs and meridians are all contained in the Pulse Formulas.
[General Fever]
Fever occurring generally always leans towards the Yang aspect. In emaciated individuals, Yin Deficiency causes deficient fire to run rampant. If one abstains from pungent foods just as they would eat bland food, it is superior to decocting and taking Di Huang Tang (Rehmannia Decoction).
[Fever Before Menstruation]
Loss of blood during menstruation leads to Yin Deficiency and endogenous heat, causing dry mouth, irritability, and emotional instability. Treatment differs between the beginning and end of the flow; external excess and deficiency-type tidal fevers have distinct names.
[Overwork Fever]
Fever caused by labor is called overwork fever, characterized by limb soreness, abundant night sweats, restlessness, and mental fatigue. Good prescriptions should be administered urgently to prevent the condition from becoming severe. Fever in the morning belongs to the Qi aspect; treat with Qing Xin Lian Zi Yin (Clear Heart Lotus Seed Drink). Fever in the afternoon belongs to the Yin aspect; treat with Di Huang Tang (Rehmannia Decoction). For those who overuse their mind, use Tian Wang Bu Xin Dan (Emperor of Heaven's Heart-Nourishing Pill). For those who overexert physically, use Jia Wei Xiao Yao San (Modified Free and Easy Wanderer Powder).
[External Contraction Fever]
External contraction fever arises from Yuan Qi (Original Qi) deficiency and shallow Wei Qi (Defensive Qi), allowing external pathogens to reside. Symptoms include irritability, thirst, and dry skin; Jia Wei Xiao Yao San (Modified Free and Easy Wanderer Powder) treats the excess. *Liang Fang* states: During menstruation, when the body is weak and warmth is excessive, external pathogens take advantage, hence called "external contraction fever." Its presentation is deficient heat in the Upper Jiao chest and diaphragm, with dry mouth, irritability, and intense heat in the hands and feet.
[Tidal Fever]
One must know that tidal fever is often Yangming Excess. Fever arrives like the tide without missing its schedule. If it is due to blood stasis stopping in the Taichong channel, Tao Ren Cheng Qi Tang (Peach Kernel Cathartic Decoction) can be used.
[Excess Heat]
A surging and forceful pulse is named excess heat. Heat occurs before menstruation begins, accompanied by constipation, cracked lips, and thirst. Yu Zhu San (Jade Candle Powder) can be decocted to harmonize blood and qi.
[Deficiency Heat]
A weak pulse indicates deficiency. When Yin is insufficient and Qi is relatively excessive, it is certainly due to excessive bleeding after menstruation. Nourishing blood will naturally eliminate it.
[Chills and Fever]
Although chills and fever are said to be caused by external wind-stroke, cases of Yin Deficiency and Yang Weakness are different. One must further seek to distinguish excess and deficiency in Qi and Blood; chills and fever alternating is another category. The Classic says: Yang Deficiency causes aversion to cold, Yin Deficiency causes fever. Insufficient Yang leads to chills first then fever; insufficient Yin leads to fever first then chills. Because Yin and Yang are unharmonized, treatment should differentiate based on Qi and Blood excess and deficiency. A faint pulse at the Cun position indicates Yang insufficiency, where Yin Qi ascends into Yang; Bu Zhong Yi Qi Tang (Tonify the Middle and Augment the Qi Decoction) is appropriate. A weak pulse at the Chi position indicates Yin insufficiency, where Yang Qi sinks into Yin; Yi Yin Di Huang Wan (Nourish Yin Rehmannia Pill) is appropriate. If anger stirs Liver Fire, use Xiao Chai Hu Tang (Minor Bupleurum Decoction). For alternating chills and fever, use Sheng Di Huang Wan (Raw Rehmannia Pill).