节斋曰，产后脾胃大虚，多有饮食过度，伤滞发热者，误作血虚，则不效，故遇
产后发热，须问若何饮食，有无伤积饱闷，恶食泄泻等证，只作伤食治之。若发热而饮
食调者，方用补血正法，但节斋所论，仅言候而不言脉，且仅言伤食标症之实，而不论
产后气血之虚，故立斋曰∶前证若胸膈饱闷，暖腐恶食，吞酸吐泻发热，此为饮食停
滞，宜四君子加浓朴、楂、曲。若胸膈闷满，食少发热，或食难消化，此脾气虚弱，
宜四君子加炮姜。若用峻厉之剂，复伤元气，则误矣。
产后亡血多汗，阴阳两虚。极危症也。《经》曰∶阳气者，精则养神，柔刚养筋。
产后既亡血，而又汗多，乃为亡阳，盖汗本血液属阴，阴亡阳亦随之而走。故曰亡阳，
其用药与他证不同，轻则参、 、白术，麻黄根、防风、桂枝，重则参、附。
《金医》曰∶产妇郁冒，其脉微弱，但头汗出所以然者。血虚而厥，厥而必冒，冒
家欲解，必大汗出。以血虚下厥，孤阳上出，故头汗出，所以产妇喜汗出者、亡阴血
虚，阳气独盛，故当汗出，阴阳乃复。然产
妇郁冒，虚多邪少，故脉微弱，中气虚也。一身之阴阳不和，故身无汗，但头汗出者，
何也？血虚下厥，则下之阴气尽，而阳为孤阳，则上出而头汗矣。仍喜其汗出而解者
何？产妇血去过多而亡阴，自阴较之，阳为独盛，所以喜其汗，损阳就阴，则阴阳平，
故曰乃复。
节斋说，产后脾胃功能极度虚弱，常有因饮食过量导致食积停滞而发热的情况。如果误认为是血虚进行治疗，则不会见效。因此，遇到产后发热，必须询问具体的饮食情况，是否有伤食积滞、饱闷、厌食、泄泻等症状，只按照伤食来治疗。如果发热且饮食调理后好转，才使用补血的正治法。但是节斋的论述，只提到了候诊（问诊）而没有提及脉诊，并且只谈论了伤食这一标症的实证表现，而没有讨论产后气血亏虚的本质。所以立斋说：前述证候如果出现胸膈部饱闷、嗳气有腐臭味、厌恶食物、吞酸、呕吐泄泻并伴有发热，这是饮食停滞所致，适宜用四君子汤加浓朴、山楂、神曲。如果胸膈部闷满，食欲减退伴发热，或者食物难以消化，这是脾气虚弱所致，适宜用四君子汤加炮姜。如果使用猛烈峻厉的药物，再次损伤元气，那就是错误的了。
产后失血多汗，导致阴阳两虚。这是极其危险的病症。《内经》说：阳气，精微则滋养精神，柔和刚健则滋养筋脉。产后既然已经失血，而又汗出过多，这就属于亡阳。因为汗液本属血液，归属于阴，阴液亡失，阳气也会随之耗散。所以称为亡阳，其用药方法与其他病证不同。轻症用人参、[此处原文缺字，推测为黄芪或类似补气药]、白术、麻黄根、防风、桂枝；重症用人参、附子。
《金匮要略》说：产妇出现郁冒，脉象微弱，只有头部出汗。之所以如此，是因为血虚导致厥逆，厥逆必然导致昏冒。郁冒想要解除，必须全身大汗出。因为血虚导致下部厥逆，孤阳向上外越，所以头部出汗。因此产妇喜欢出汗，是因为亡失阴血导致血虚，阳气独盛，所以当通过出汗，阴阳才能恢复平衡。然而产妇郁冒，虚证多而邪气少，所以脉象微弱，这是中气虚弱的表现。一身之阴阳不和，所以身体无汗，只有头部出汗，为什么呢？血虚导致下部厥逆，则下部的阴气耗尽，而阳气成为孤阳，向上外越从而头部出汗。仍然喜欢它通过出汗而解除的原因是什么呢？产妇失血过多而亡失阴液，与阴相比，阳气独盛，所以喜欢出汗，通过损耗阳气以就合阴液，从而使阴阳平衡，所以说阴阳得以恢复。
Jiezai stated that postpartum spleen and stomach functions are severely deficient. There are often cases of fever caused by excessive food intake leading to food stagnation. If mistakenly treated as blood deficiency, the treatment will be ineffective. Therefore, when encountering postpartum fever, one must inquire about dietary habits, checking for signs such as food accumulation, fullness, distension, anorexia, or diarrhea, and treat it solely as food stagnation. Only if the fever subsides with dietary regulation should the standard method of tonifying blood be employed. However, Jiezai's discussion only mentions inquiry (inspection) but omits pulse diagnosis, and only addresses the excess symptoms of food stagnation as a branch manifestation, without discussing the underlying deficiency of qi and blood in the postpartum state. Therefore, Lizhai stated: Regarding the aforementioned conditions, if there is fullness and oppression in the chest and diaphragm, belching with a putrid odor, aversion to food, acid regurgitation, vomiting, diarrhea accompanied by fever, this indicates food stagnation. It is appropriate to use Sijunzi Tang (Four Gentlemen Decoction) augmented with Houpo (Magnolia Bark), Shanzha (Hawthorn Fruit), and Shenqu (Medicated Leaven). If there is chest and diaphragmatic oppression, reduced appetite with fever, or difficulty digesting food, this indicates spleen qi deficiency. It is appropriate to use Sijunzi Tang (Four Gentlemen Decoction) augmented with Paojiang (Prepared Ginger). Using harsh and drastic agents would further damage the primordial qi, which would be an error.
Postpartum hemorrhage accompanied by profuse sweating leads to dual deficiency of yin and yang. This is an extremely critical condition. The *Classic of Internal Medicine* (*Huangdi Neijing*) states: "Yang qi, when refined, nourishes the spirit; when soft and firm, it nourishes the sinews." Since postpartum women have already lost blood and now suffer from profuse sweating, this constitutes loss of yang. Sweat originates from blood and belongs to yin; when yin is depleted, yang follows and dissipates. Thus, it is termed loss of yang, and its medication differs from other conditions. For mild cases, Renshen (Ginseng Root), [text missing, likely Huangqi], Baizhu (Atractylodes Macrocephala Rhizome), Mahuanggen (Ephedra Root), Fangfeng (Saposhnikovia Root), and Guizhi (Cinnamon Twig) are used. For severe cases, Renshen (Ginseng Root) and Fuzi (Aconite Lateralis Radix Preparata) are used.
The *Jin Gui Yao Lue* (Essential Prescriptions of the Golden Cabinet) states: "In postpartum women suffering from Yu Mao (depression and dizziness), the pulse is faint, and only the head sweats. The reason is that blood deficiency leads to jue (reversal/cold extremities), and jue inevitably leads to mao (dizziness/obscuration). For the condition of mao to resolve, there must be profuse sweating over the whole body. Due to blood deficiency causing lower jue, isolated yang floats upward, hence the head sweat. Therefore, postpartum women welcome sweating because the loss of yin blood leads to blood deficiency and solitary excess of yang; thus, sweating allows yin and yang to restore balance. However, in postpartum Yu Mao, deficiency is predominant while pathogenic factors are few, so the pulse is faint, indicating deficiency of middle qi. The yin and yang of the entire body are disharmonious, hence no body sweat, only head sweat. Why? Blood deficiency causes lower jue, depleting the yin qi below, leaving yang as isolated yang floating upward, resulting in head sweat. Why is it still welcomed that resolution occurs through sweating? Because postpartum women lose excessive blood and deplete yin; compared to yin, yang is solitary and excessive. Therefore, they welcome sweating to reduce yang and align with yin, achieving yin-yang equilibrium, hence it is said that 'yin and yang are restored.'"