凡产后寒热往来，每日应期而发，其症类疟，切不可以疟痰疾方药治之。夫气血虚而寒
热交
作，元气弱而外邪或侵，虽寒来复栗，汤火不能温，热如燔炙，冰水不能寒，或昼轻夜重，
或日晡寒热，虽所见症与疟类同，其方药必当滋荣益气，以退寒热，有汗急当止汗，如麻黄
根汤等药。若头有汗而不及手足，乃孤阳绝阴之危症也，当加地黄、当归之剂。如感寒头痛
无汗，宜于生化汤内加羌活、防风、莲须、葱头以散之，慎不可作疟治以误人也。柴胡汤、
青皮饮、常山、草果等方药，俱不可用。
麻黄根汤
麻黄根 当归 黄 炙甘草 人参 桂枝 白术 牡蛎 浮小麦
凡妇人产后，患类疟疾，头有汗，身足无者，偏服参，少血分药，多不救。
滋荣益气扶正汤 治产后寒热有汗，每日午后，应期而发。
川芎（一钱） 当归（二钱） 炙草（五分） 人参（二钱） 生熟地（二钱） 黄 （一钱） 陈
皮（四分，去白） 麦冬（一钱） 白术（一钱五分） 麻黄根（一钱五分）
夜服六味地黄丸，每服七八十丸，清汤下。
加减养胃汤 治产后寒热往来，头疼无汗，类疟。
川芎（一钱） 当归（三钱） 藿香（四分） 炙草（四分） 茯苓（一钱） 苍术（一钱） 人参
（一钱五分） 半夏（八分） 橘红（四分）
姜引。
痰，加竹沥、姜汁、半夏曲。弱人兼服河车丸。
产后久疟，无汗不愈，兼煎白术人参膏，以助药力。
Whenever postpartum patients experience alternating chills and fever (alternating cold and heat) that occur at regular intervals daily, with symptoms resembling malaria (a disease characterized by paroxysms of cold and fever), one must absolutely not treat it with medicines intended for phlegm-type malaria. This is because deficiency of Qi and Blood leads to alternating chills and fever, while weak Yuan Qi (Original Qi) allows external pathogens to invade. Although the patient may shiver intensely when chills come, unable to be warmed even by hot water or fire; and although they may feel as if burning when fever arises, unable to be cooled even by ice water. The pattern may present as milder during the day and heavier at night, or with chills and fever occurring in the late afternoon (Shen hour). Although the observed symptoms resemble those of malaria, the treatment must focus on nourishing Ying (Nutritive) Blood and tonifying Qi to resolve the chills and fever. If sweating occurs, immediate antiperspirant measures are required, such as using Mahuang Gen Tang (Ephedra Root Decoction). If sweating is confined only to the head and does not extend to the hands and feet, this indicates a critical condition of "Lone Yang and Absolute Yin" (severe Yin deficiency with floating Yang); in such cases, Di Huang (Rehmanniae Radix) and Dang Gui (Angelicae Sinensis Radix) should be added to the formula. If the cause is Cold pathogen invasion leading to headache and absence of sweating, it is appropriate to add Qiang Huo (Notopterygii Rhizoma et Radix), Fang Feng (Saposhnikoviae Radix), Lian Xu (Nelumbinis Stamen), and Cong Bai (Allii Fistulosi Bulbus) within Sheng Hua Tang (Invigorate the Blood Decoction) to disperse the exterior. One must strictly avoid treating it as malaria to prevent medical error. Chai Hu Tang (Bupleurum Decoction), Qing Pi Yin (Green Tangerine Peel Drink), Chang Shan (Polygalae Tuber), and Cao Guo (Tsaoko Fructus) and other formulas and herbs are all contraindicated.
Mahuang Gen Tang (Ephedra Root Decoction)
Ingredients: Mahuang Gen (Ephedrae Radix et Rhizoma), Dang Gui (Angelicae Sinensis Radix), Huang Qi (Astragali Radix), Zhi Gan Cao (Prepared Glycyrrhizae Radix et Rhizoma), Ren Shen (Ginseng Radix), Gui Zhi (Cinnamomi Ramulus), Bai Zhu (Atractylodis Macrocephalae Rhizoma), Mu Li (Ostreae Concha), Fu Xiao Mai (Tritici Levis Fructus).
In women postpartum suffering from malaria-like illness, where there is sweating on the head but not on the body or feet, if one relies solely on Ginseng tonics without including sufficient blood-nourishing herbs, the condition is often incurable.
Zirong Yiqi Fuzheng Tang (Nourish Blood and Tonify Qi to Support Righteousness Decoction): Treats postpartum alternating chills and fever with sweating, occurring regularly every afternoon.
Ingredients: Chuan Xiong (Ligusticum Chuanxiong Rhizoma) (1 qian), Dang Gui (Angelicae Sinensis Radix) (2 qian), Zhi Cao (Prepared Glycyrrhizae Radix et Rhizoma) (0.5 qian), Ren Shen (Ginseng Radix) (2 qian), Sheng Di Huang (Raw Rehmanniae Radix) and Shu Di Huang (Cooked Rehmanniae Radix) (2 qian each), Huang Qi (Astragali Radix) (1 qian), Chen Pi (Citri Reticulatae Pericarpium) (0.4 qian, white pith removed), Mai Dong (Ophiopogonis Radix) (1 qian), Bai Zhu (Atractylodis Macrocephalae Rhizoma) (1.5 qian), Mahuang Gen (Ephedrae Radix et Rhizoma) (1.5 qian).
At night, take Liuwei Dihuang Wan (Six-Ingredient Pill with Rehmannia), 70–80 pills per dose, taken with clear water.
Jiajian Yangwei Tang (Modified Stomach-Nourishing Decoction): Treats postpartum alternating chills and fever, headache, absence of sweating, and malaria-like symptoms.
Ingredients: Chuan Xiong (Ligusticum Chuanxiong Rhizoma) (1 qian), Dang Gui (Angelicae Sinensis Radix) (3 qian), Huo Xiang (Pogostemonis Herba) (0.4 qian), Zhi Cao (Prepared Glycyrrhizae Radix et Rhizoma) (0.4 qian), Fu Ling (Poria) (1 qian), Cang Zhu (Atractylodis Rhizoma) (1 qian), Ren Shen (Ginseng Radix) (1.5 qian), Ban Xia (Pinelliae Rhizoma) (0.8 qian), Ju Hong (Citri Reticulatae Pericarpium Rubrum) (0.4 qian).
Administration: Use fresh ginger as a guide.
If Phlegm is present, add Zhu Li (Bambusae Succus), Jiang Zhi (Zingiberis Recens Juice), and Ban Xia Qu (Pinelliae Fermentatum). For weak constitutions, concurrently administer He Che Wan (Placenta Humanum Pill).
For prolonged postpartum malaria with no sweating and non-resolution, concurrently decoct Ba Zhu Ren Shen Gao (Atractylodes and Ginseng Paste) to assist the medicinal efficacy.