自汗在太阳，谓之风邪，桂枝汤证也。在阳明，谓之热越，白虎汤证也。若大热蒸蒸，汗出过多，宜用调
胃承气汤急下其热，以救其津也。若更兼发热，下利不休，内外两脱属凶。如头汗出，剂颈而还，则为热不得
外越，是以上蒸于首也。或因黄郁未发，或因湿家误下，或因水结胸蒸，或因火劫热迫，或因阳明蓄血，或因
热入血室，当分门施治。
胃主四肢，为津液之主。如热聚于胃，蒸其津液，旁达于四肢，故手足 然汗出，且小便自利，胃中
津液必干，大便必硬，本当攻也。若中寒胃阳土虚，脾不约束，津液横溢四肢，故汗出而冷；阳虚失运，中寒
不化，故小便不利；今虽便硬，而手足汗，非为热越者比，慎不可攻，攻之必变生固瘕，泄泻澄清不止也。
潮热阳明腑证也，阳明旺于申酉，故潮热发于午后，是可下之证也。发热汗蒸蒸无休止时，亦属阳明内实
，可下之证。时热谓发热时轻时重，而有自汗，必不兼里实可下之证，知风邪留连在表，可用桂枝汤主治。
言语心之主也，心气实热而神有余，则发为谵语，谵语为实，故声长而壮，乱言无次，数数更端也。心
气虚热，而神不足，则发为郑声，郑声为虚，故音短而细，只将一言重复呢喃也。凡谵语郑声，与阳经同见
者，均属热证，可以攻之。与阴经同见者，总为寒证，可以温之。然虽与阳经同见，而无可攻之证，不可攻
之，当清解也。虽与阴经同见，而无可温之证，不可温之，当清补也。
自汗出现在太阳病阶段，属于风邪侵袭，是桂枝汤的适应证。出现在阳明病阶段，称为热邪外越，是白虎汤的适应证。如果出现高热蒸腾、出汗过多，应当使用调胃承气汤急下以清除热邪，从而挽救津液。如果同时伴有发热且腹泻不止，导致表里之气两脱，属于凶险之证。如果是头部出汗，仅到颈部而止，这是因为热邪不能向外发散，反而向上蒸腾于头部所致。这可能是由于湿热郁结尚未发作，或者是湿病患者被误用攻下法，或者是水饮结聚于胸膈导致热气上蒸，或者是火疗劫迫导致热邪内扰，或者是阳明蓄血证，或者是热邪陷入血室，应当根据具体证型分别施治。
胃主管四肢，是津液的主宰。如果热邪聚集在胃中，蒸腾津液，旁达于四肢，所以手足濈然（持续不断）出汗，并且小便通畅，这说明胃中的津液必然干枯，大便必然坚硬，本应当采用攻下法治疗。如果是中寒导致胃阳虚弱、脾土虚损，脾脏失去约束能力，津液横溢至四肢，所以出汗且发冷；阳气虚弱无法运化，中焦寒盛无法消化，所以小便不利；此时虽然大便坚硬且有手足汗出，但这与热邪外越的情况不同，务必不可攻下，一旦攻下必定变生固瘕（腹中结块），出现泄泻清稀不止的症状。
潮热是阳明腑实证的典型表现，阳明经气旺盛于申时和酉时（下午3点至7点），所以潮热多在午后发作，这是可以使用攻下法的证候。发热伴有大汗淋漓且无休止之时，也属于阳明内实，是可以攻下的证候。时热是指发热时轻时重，并伴有自汗，这必定不兼有里实可下的证候，可知是风邪留恋在肌表，可以使用桂枝汤主治。
言语由心所主。心气充实而有热，神气有余，就会发生谵语，谵语属于实证，所以声音长而壮厉，胡言乱语没有次序，频繁更换话题。心气虚弱而有热，神气不足，就会发生郑声，郑声属于虚证，所以声音短促而细微，只是将一句话反复呢喃。凡是谵语或郑声，如果与阳经病证同时出现，都属于热证，可以采用攻下法治疗。如果与阴经病证同时出现，总属寒证，可以采用温补法治疗。然而，即使与阳经病证同时出现，如果没有可以攻下的实证指征，也不可攻下，应当采用清热解表的方法。即使与阴经病证同时出现，如果没有可以温补的虚寒指征，也不可温补，应当采用清热兼补益的方法。
Sweating occurring in the Taiyang disease stage is attributed to Wind pathogenic factors and indicates an indication for Guizhi Tang (Cinnamon Twig Decoction). When it occurs in the Yangming disease stage, it is termed "Heat dispersing outward" and indicates an indication for Baihu Tang (White Tiger Decoction). If there is high fever with steaming sensation and excessive sweating, Daowei Chengqi Tang (Stomach-Regulating Purging Decoction) should be used urgently to purge the heat and rescue the body fluids. If accompanied by fever and unceasing diarrhea, leading to a collapse of both exterior and interior Qi, this is a ominous condition. If only the head sweats, stopping at the neck, it is because the Heat cannot disperse outward but instead steams upward to the head. This may be due to unresolved damp-heat stagnation, mistaken purgative treatment in patients with dampness, water accumulation in the chest causing steaming heat, heat forced by fire therapy, blood stasis in the Yangming, or heat entering the Blood chamber; treatment must be applied according to the specific syndrome category.
The Stomach governs the four limbs and is the master of body fluids. If Heat accumulates in the Stomach, steaming the fluids which then spread to the four limbs, continuous sweating occurs on the hands and feet, along with free urination. This implies that the Stomach's fluids are necessarily dry and the stool hard, indicating that purgative treatment is originally indicated. However, if Cold invades the middle, causing deficiency of Stomach Yang and Spleen Earth, the Spleen loses its ability to constrain, allowing fluids to overflow to the limbs, resulting in cold sweating. Due to Yang deficiency failing to transport and Middle Jiao Cold failing to transform, urination becomes difficult. Although the stool is hard and there is sweating on the hands and feet, this differs from Heat dispersing outward; purgatives must strictly be avoided. Using them will inevitably lead to complications such as fixed masses (Gu Xia) and unceasing clear diarrhea.
Tidal fever is a syndrome of Yangming Fu-organ excess. The Yangming channel is vigorous during Shen and You hours (3 PM–7 PM), so tidal fever often manifests in the afternoon, indicating an indication for purgative treatment. Fever accompanied by profuse, ceaseless sweating also belongs to Yangming internal excess and is an indication for purgative treatment. Intermittent fever refers to fever that fluctuates in intensity, accompanied by spontaneous sweating; this definitely does not involve interior excess suitable for purgation. It indicates that Wind pathogenic factors are lingering in the exterior, and Guizhi Tang (Cinnamon Twig Decoction) should be used as the primary treatment.
Speech is governed by the Heart. When Heart Qi is full and hot, with excess Spirit, Delirious Speech (Zhanyu) occurs. Delirious speech is a Excess pattern, characterized by long, loud voices, incoherent rambling without order, and frequent topic changes. When Heart Qi is deficient and hot, with insufficient Spirit, Prostrate Speech (Zhengsheng) occurs. Prostrate speech is a Deficiency pattern, characterized by short, faint voices, merely repeating a single phrase in a murmuring manner. Whenever Delirious Speech or Prostrate Speech appears concurrently with Yang-channel diseases, they all belong to Heat patterns and can be treated with purgation. When they appear concurrently with Yin-channel diseases, they generally belong to Cold patterns and can be treated with warming methods. However, even if concurrent with Yang-channel diseases, if there are no indications for purgation, one must not use purgatives but should instead employ clearing and resolving methods. Even if concurrent with Yin-channel diseases, if there are no indications for warming, one must not use warming methods but should instead employ clearing combined with tonification.