薛立斋曰∶按良甫云，此由气血虚损，阴
阳不和，宜四物加减。若败血不散，腹内作痛，宜夺命丹。夫阳气不足，阴气上入阳中而恶寒者，补中汤。若
阴气不足，阳气下陷，阴中发热者，六味丸。若气血不足，恶寒发热者，八珍汤。
慎斋按∶以上五条，序产后有寒热往来之证也。寒热往来，为少阳经病。产后见之，明属阴阳两虚，荣卫
不和之候，当遵丹溪大补气血为治，非小柴胡可例也。若云败血不散为寒热，郭稽中有入肺入脾之论，陈无择
有闭阴闭阳之议，两说均不能无疑。夫败血瘀滞，岂有或入肺或入脾之理，况寒热何独专于脾肺，其心肾肝独
不可为寒热乎？败血闭阴为寒，便不能闭阳为热；闭阳为热，便不能闭阴为寒。岂有既闭阴复闭阳，得谓之
败血不散乎？立言之谬，恐有惑于后人。总之，败血为病，乃生寒热，本于荣卫不通，阴阳乖格之故，武叔卿
始得其旨。
《大全》曰∶产后虚汗不止者，由阴气虚而阳气加之。里虚，阳气独发于外，故汗出。血为阴，产则伤血，
是为阴气虚。气为阳，其气实者，阳加于阴，故令汗出。阴气虚弱不复者，汗出不止，因遇风则变痉。纵不成
痉，亦虚乏短气，身体柴瘦，唇口干燥，久则经水断绝，由津液竭故也。
单养贤曰∶产后虚汗，经曰∶阳气者，精则养神，柔则养筋。产后既亡血，而又汗多，乃为亡阳。汗本血
液，属阴，阴亡，阳亦随之而走，故曰亡阳。产后亡血多汗，阴阳两虚，极危证也。故用药与他证不同，慎之。
方用参、 、白术、麻黄根、防风、桂枝。
薛立斋说：按照良甫的说法，这是由于气血虚损，阴阳不和，适宜用四物汤加减治疗。如果有败血（恶露）不散，导致腹部疼痛，适宜用夺命丹。如果是阳气不足，阴气侵入阳分而表现为恶寒的，用补中汤。如果是阴气不足，阳气下陷，在阴分发热（骨蒸潮热）的，用六味丸。如果是气血不足，出现恶寒发热的，用八珍汤。
慎斋按语：以上五条，叙述了产后有寒热往来的证候。寒热往来，是少阳经的病证。产后见到这种症状，明显属于阴阳两虚、营卫不和的表现，应当遵循丹溪先生大补气血的原则进行治疗，不能简单地用小柴胡汤来类推治疗。如果说败血不散导致寒热，郭稽中有“入肺”、“入脾”的论述，陈无择有“闭阴”、“闭阳”的议论，这两种说法都难以令人信服。败血瘀滞，怎么会有或入肺、或入脾的道理呢？况且寒热为何唯独专属于脾肺，难道心、肾、肝就不可能产生寒热吗？败血闭阴导致恶寒，就不能同时闭阳导致发热；闭阳导致发热，就不能同时闭阴导致恶寒。难道既闭阴又闭阳，还能称之为败血不散吗？这些言论的错误，恐怕会迷惑后人。总之，败血致病产生寒热，根本原因在于营卫不通、阴阳格拒，武叔卿才真正掌握了这一主旨。
《妇人大全良方》说：产后虚汗不止，是由于阴气虚弱而阳气乘虚外越。体内虚弱，阳气独自发散于体表，所以出汗。血属于阴，生产时损伤血液，这就是阴气虚弱。气属于阳，如果气实，阳加于阴，就会导致出汗。如果阴气虚弱无法恢复，就会汗出不止，如果遇到风邪就会变成痉病（抽搐）。即使不变成痉病，也会变得虚弱乏力、气短、身体枯瘦、嘴唇口舌干燥，时间久了会导致月经断绝，这是因为津液枯竭的缘故。
单养贤说：产后虚汗，《黄帝内经》说：阳气，精微则滋养精神，柔和则滋养筋脉。产后既然已经亡血，而又汗出过多，这就是亡阳。汗本属于血液，归属于阴，阴液亡失，阳气也随之耗散，所以称为亡阳。产后亡血且多汗，导致阴阳两虚，是极其危险的证候。因此用药与其他病症不同，必须谨慎。方剂用人参、[缺字]、白术、麻黄根、防风、桂枝。
Xue Lizhai stated: According to Liangfu, this condition arises from deficiency and damage of Qi and Blood, with disharmony between Yin and Yang. It is appropriate to use Siwu Tang (Four Substances Decoction) with modifications. If retained blood (lochia) fails to disperse, causing abdominal pain, Duoming Dan should be used. In cases where Yang Qi is insufficient and Yin Qi invades the Yang aspect, resulting in aversion to cold, Buzhong Tang is indicated. When Yin Qi is insufficient and Yang Qi sinks, causing heat sensation within the Yin aspect, Liuwei Wan (Six-Ingredient Pill with Rehmannia) is prescribed. For conditions involving insufficiency of both Qi and Blood manifesting as aversion to cold and fever, Bazhen Tang (Eight Treasures Decoction) is suitable.
Shen Zhai commented: The above five points describe the syndrome of alternating chills and fever occurring postpartum. Alternating chills and fever are characteristic of Shaoyang channel diseases. When observed postpartum, it clearly belongs to a pattern of dual deficiency of Yin and Yang, and disharmony of Ying (Nutritive) and Wei (Defensive) Qi. Treatment should follow Danyu’s principle of greatly tonifying Qi and Blood; it cannot be treated simply by analogy with Xiaochaihu Tang (Minor Bupleurum Decoction). Regarding the theory that retained blood causes chills and fever, Guo Jizhong proposed theories of invasion into the Lung and Spleen, while Chen Wuyue discussed closure of Yin and closure of Yang. Both arguments are questionable. How can stagnant retained blood logically enter either the Lung or the Spleen exclusively? Moreover, why would chills and fever be specific only to the Spleen and Lung, while excluding the Heart, Kidney, and Liver? If retained blood closes Yin causing chills, it cannot simultaneously close Yang causing fever; if it closes Yang causing fever, it cannot close Yin causing chills. Can one claim it is "retained blood failing to disperse" if it involves both closing Yin and closing Yang? Such erroneous statements may confuse future practitioners. In summary, the generation of chills and fever due to retained blood stems fundamentally from the obstruction of Ying and Wei circulation and the mutual rejection of Yin and Yang. Only Wu Shuqing truly grasped this essence.
The *Daquan* (Great Compendium) states: Persistent spontaneous sweating postpartum occurs because Yin Qi is deficient, allowing Yang Qi to invade. Internal deficiency allows Yang Qi to radiate outward alone, resulting in sweating. Blood belongs to Yin; childbirth injures Blood, constituting a deficiency of Yin Qi. Qi belongs to Yang; when Qi is substantial, Yang adds to Yin, causing sweating. If Yin Qi is weak and fails to recover, sweating persists indefinitely. Exposure to wind may then transform this into Jing disease (spasms/tetanus). Even if spasms do not develop, the patient will suffer from weakness, shortness of breath, emaciation, dry lips and mouth, and eventually amenorrhea due to the exhaustion of Jin-Ye (Body Fluids).
Dan Yangxian stated: Regarding postpartum spontaneous sweating, the *Huangdi Neijing* (Yellow Emperor's Inner Canon) says: "Yang Qi, when refined, nourishes the Spirit; when soft, nourishes the Sinews." Postpartum, having already lost Blood, excessive sweating constitutes Wang Yang (Loss of Yang). Sweat originates from Blood, belonging to Yin. When Yin is lost, Yang follows and dissipates; thus, it is termed Loss of Yang. Postpartum blood loss combined with profuse sweating leads to dual deficiency of Yin and Yang, representing an extremely critical condition. Therefore, medication differs from other syndromes; caution is essential. The formula uses Renshen (Ginseng), [missing character], Baizhu (Atractylodes Macrocephala Rhizome), Mahuanggen (Ephedrae Radix et Rhizoma), Fangfeng (Saposhnikoviae Radix), and Guizhi (Cinnamon Twig).