产后寒热往来，每日应期而发，其症似疟，而不可作疟治。夫气血虚而寒热更作，元气虚而外邪或侵，或严寒、或
极热、或昼轻夜重、或日晡寒热，绝类疟症，治当滋荣益气，以退寒热。有汗急宜止，或加麻黄根之类；只头有汗而不
及于足，乃孤阳绝阴之危症，当加地黄、当归之类；如阳明无恶寒，头痛无汗，且与生化汤，加羌活、防风、连须、葱
白数根以散之。其柴胡清肝饮等方，常山、草果等药，俱不可用。
滋荣养气扶正汤 治产后寒热有汗，午后应期发者。
人参（二钱） 炙黄 白术 川芎 熟地 麦冬 麻黄根（各一钱） 当归（三钱） 陈皮（四分） 炙草（五
分）
枣，水煎。
歌括∶产后寒热往来频，应期而发汗雨淋。
似疟不可作疟治，气血两虚是病因。
滋荣养气术 参，当归川芎熟地陈。
麦冬炙草枣为引，有汗加入麻黄根。
加减养胃汤 治产后寒热往来，头痛无汗类疟者。
炙草（四分） 白茯苓（一钱） 半夏（八分，制） 川芎（一钱） 陈皮（四分） 当归（二钱） 苍术（一钱）
藿香（四分） 人参（一钱）
姜引煎服。
有痰，加竹沥、姜汁、半夏、神曲，弱人兼服河车丸。凡久疟不愈，兼服参术膏以助药力。
参术膏
白术一斤米泔浸一宿，锉焙，人参一两用水六碗，煎二碗，再煎二次，共汁六碗，合在一处，将药汁又熬成一碗，
空心米汤化半酒盏。
歌括∶产后头痛身无汗，寒热往来是病源。
芎归苓藿苍术半，炙草陈皮人参煎。
有痰竹沥姜夏曲，弱人兼服河车丸。
久疟不愈参术膏，空心汤化半酒盏。
产后出现寒热交替往来，每天按时发作，症状类似疟疾，但不能当作疟疾来治疗。这是因为气血虚弱导致寒热交替发作，元气虚弱使得外邪容易入侵，表现为或严寒、或极热、或白天轻晚上重、或傍晚时分寒热交作，这些情况都极度类似疟疾的症状，治疗应当滋养营血、补益元气，以消退寒热。如果有汗出，应当立即止汗，可以加入麻黄根之类的药物；如果只有头部出汗而不到足部，这是孤阳绝阴的危重病症，应当加入地黄、当归之类的药物；如果是阳明经证，没有恶寒，头痛且无汗，则给予生化汤，加入羌活、防风、连须葱白数根以发散邪气。像柴胡清肝饮等方剂，以及常山、草果等药物，都不可使用。
滋荣养气扶正汤：治疗产后寒热有汗，午后按时发作的情况。
人参（二钱）、炙黄芪、白术、川芎、熟地黄、麦冬、麻黄根（各一钱）、当归（三钱）、陈皮（四分）、炙甘草（五分），加红枣，用水煎服。
歌诀：产后寒热往来频繁，按时发作时汗如雨下。
看似疟疾不可按疟疾治，气血两虚才是病因。
用滋荣养气的白术和人参，配合当归、川芎、熟地、陈皮。
麦冬、炙甘草、红枣作为引药，有汗的情况下加入麻黄根。
加减养胃汤：治疗产后寒热往来，头痛无汗类似疟疾的情况。
炙甘草（四分）、白茯苓（一钱）、半夏（八分，制过）、川芎（一钱）、陈皮（四分）、当归（二钱）、苍术（一钱）、藿香（四分）、人参（一钱），用生姜为引煎服。
如果有痰，加入竹沥、姜汁、半夏、神曲；体弱的人兼服河车丸。凡是久疟不愈的，兼服参术膏以助药力。
参术膏：
白术一斤，用米泔水浸泡一夜，切碎焙干；人参一两，用水六碗，煎至两碗，再煎两次，共得药汁六碗，合并在一起，将药汁又熬成一碗，空腹时用米汤化开半酒杯服用。
歌诀：产后头痛身体无汗，寒热往来是病源。
川芎、当归、茯苓、藿香、苍术、半夏，加上炙甘草、陈皮、人参煎煮。
有痰加竹沥、姜汁、半夏、神曲，体弱者兼服河车丸。
久疟不愈服参术膏，空腹用汤化开半酒杯。
Postpartum chills and fever alternate, occurring daily at the same time. The symptoms resemble malaria (Nüe Ji), but it must not be treated as malaria. This is because deficiency of Qi and Blood causes alternating chills and fever, and deficiency of Yuan Qi allows external pathogens to invade. Symptoms may include severe cold, extreme heat, being lighter during the day and heavier at night, or chills and fever in the late afternoon. These conditions closely mimic malaria syndrome. Treatment should focus on nourishing Ying Blood and tonifying Yuan Qi to resolve the chills and fever. If sweating is present, it should be stopped immediately, possibly by adding herbs like Mahuang Gen (Ephedrae Caulis); if sweating is limited only to the head and does not extend to the feet, this indicates a critical condition of isolated Yang and exhausted Yin, requiring the addition of Dihuang (Rehmanniae Radix Preparata) and Danggui (Angelicae Sinensis Radix). If there are Yangming channel signs without aversion to cold, with headache and no sweating, Shenghua Tang (Life Return Decoction) should be administered, augmented with Qianghuo (Notopterygii Rhizoma et Radix), Fangfeng (Saposhnikoviae Radix), and several stalks of Congbai (Allii Fistulosi Bulbus) to disperse the pathogen. Formulas such as Chaihu Qinggan Yin (Bupleurum Liver-Clearing Drink) and herbs like Changshan (Polygalae Radix) and Caoguo (Tsaoko Fructus) must not be used.
Zirong Yangqi Fuzheng Tang (Nourishing Blood and Qi to Support Righteousness Decoction): Treats postpartum chills and fever with sweating, occurring at the expected time in the afternoon.
Renshen (Ren Shen, Ginseng Root) (2 qian), Zhi Huangqi (Astragali Radix Preparata), Baizhu (Atractylodis Macrocephalae Rhizoma), Chuanxiong (Ligustici Chuanxiong Rhizoma), Shudi (Rehmanniae Radix Preparata), Maidong (Ophiopogonis Radix), Mahuanggen (Ephedrae Caulis) (each 1 qian), Danggui (Dang Gui, Angelicae Sinensis Radix) (3 qian), Chenpi (Citri Reticulatae Pericarpium) (4 fen), Zhi Cao (Glycyrrhizae Radix et Rhizoma Preparatum) (5 fen), Jujubae Fructus (Jujube), decocted in water.
Verse: Postpartum chills and fever come frequently, arriving on schedule with sweat pouring like rain.
Though resembling malaria, do not treat it as such; the cause is dual deficiency of Qi and Blood.
Use Baizhu and Renshen to nourish blood and support Qi, along with Danggui, Chuanxiong, Shudi, and Chenpi.
Maidong and Zhi Cao with Jujubae Fructus serve as guides; add Mahuanggen if sweating occurs.
Jiajian Yangwei Tang (Modified Stomach-Nourishing Decoction): Treats postpartum alternating chills and fever, headache with no sweating, resembling malaria.
Zhi Cao (Prepared Licorice Root) (4 fen), Bai Fuling (Poria) (1 qian), Banxia (Pinelliae Rhizoma Preparatum) (8 fen, processed), Chuanxiong (1 qian), Chenpi (4 fen), Danggui (2 qian), Cangzhu (Atractylodis Rhizoma), Huoxiang (Agastaches Herba) (4 fen), Renshen (1 qian). Decoct with fresh ginger juice as a guide.
If phlegm is present, add Zhuli (Bambusae Succus), Jiangzhi (Zingiberis Recens Juice), Banxia, and Shenqu (Massa Medicata Fermentata); for weak patients, also administer Heche Wan (Placenta Hominis Pill). For chronic malaria that does not resolve, take Shen Zhu Gao (Ginseng and Atractylodes Paste) to assist the medicinal power.
Shen Zhu Gao (Ginseng and Atractylodes Paste):
Take one jin of Baizhu, soak in rice washing water overnight, chop and roast. Take one liang of Renshen, add six bowls of water, decoct to two bowls, decoct twice more, collecting a total of six bowls of liquid. Combine all juices, then further reduce to one bowl. Take half a wine cup dissolved in rice gruel on an empty stomach.
Verse: Postpartum headache with body devoid of sweat, alternating chills and fever is the source of illness.
Chuanxiong, Danggui, Fuling, Huoxiang, Cangzhu, and Banxia, decocted with Zhi Cao, Chenpi, and Renshen.
For phlegm, add Zhuli, Jiangzhi, Banxia, and Shenqu; weak patients also take Heche Wan.
For unresolved chronic malaria, take Shen Zhu Gao, dissolved in gruel on an empty stomach, half a wine cup.