疟为病 属少阳 少阳为半表半里，邪居其界。入与阴争则寒，出与阳争则热。争则病
作，息则病止，止后其邪仍据于少阳之经。
寒与热 若回翔 寒热必应期而至。
日一发 亦无伤 邪浅则一日一作，邪深则二日一作。
三日作 势猖狂 疟三日一作，时医名三阴疟，留连难愈。
治之法 小柴方 以小柴胡汤为主。初起，俗忌人参，姑从俗而去之，加青皮一钱。
热偏盛 加清凉 小柴胡汤加知母、花粉、石膏、黄连之类，随宜择用。
寒偏重 加桂姜 加干姜、桂枝，甚者加附子、肉桂。
邪气盛 去参良 身热者，小柴胡汤去人参加桂枝一钱。服后食热粥，温覆取微汗。
常山入 力倍强 小柴胡汤加常山二三钱。俗云邪未净不可用常山以截之。不知
常山非截邪之品，乃驱邪外出之品。仲景用其苗，名曰蜀漆。
大虚者 独参汤 虚人久疟不愈，以人参一两、生姜五钱，水煎，五更服极效。贫者，
以白术一两代之，热多者以当归代之。
单寒牝 理中匡 单寒无热名曰牝疟，宜附子理中汤加柴胡治之。
单热瘅 白虎详 单热无寒，名曰∶瘅疟；或先热后寒，名曰∶热疟，俱宜以白虎汤，
加桂枝治之。时医以六味汤加柴胡、芍药治之。
法外法 辨微茫 以上皆前医之成法。更法外有法，不可不辨而治之。
消阴翳 制阳光 热之不热，是无火也；益火之源，以消阴翳。寒之不寒，是无水也；
壮水之主，以制阳光。
太仆注 慎勿忘 王太仆消阴制阳等注，千古不刊之论。赵养葵遵之，以八味丸益火之
源，六味丸壮水之主，久疟多以此法收功。
Malaria (Nüe) as a disease belongs to the Shaoyang (Lesser Yang) channel. The Shaoyang channel is located at the half-exterior and half-interior level, where pathogenic factors reside at this boundary. When pathogens enter and contend with Yin, chills occur; when they emerge and contend with Yang, fever occurs. Contention causes the disease to manifest, cessation of contention causes the disease to stop, but after stopping, the pathogenic factors still occupy the Shaoyang channel.
Chills and fever alternate like a turning back and forth; the chills and fever must arrive according to a specific periodicity.
If it occurs once daily, it does no great harm; shallow pathogens result in daily attacks, while deep pathogens result in bi-daily attacks.
If it occurs every three days, the condition becomes rampant; malaria occurring every three days is named "San-Yin Malaria" by contemporary physicians, lingering and difficult to cure.
The method of treatment centers on Xiao Chai Hu Tang (Minor Bupleurum Decoction). At the onset, folk custom forbids the use of Renshen (Ginseng Root); following custom, it is omitted, and Qingpi (Green Citrus Peel) is added, one qian.
If heat predominates, add cooling agents: To Xiao Chai Hu Tang, add Zhi Mu (Anemarrhena Rhizome), Hua Fen (Trichosanthes Root), Shi Gao (Gypsum Fibrosum), Huang Lian (Coptis Rhizome), etc., selected as appropriate.
If cold predominates, add Gui Zhi (Cinnamon Twig) and Gan Jiang (Dried Ginger): Add Gan Jiang and Gui Zhi; in severe cases, add Fu Zi (Aconite Lateral Root) and Rou Gui (Cinnamon Bark).
If pathogenic factors are exuberant, remove Renshen: For those with body heat, use Xiao Chai Hu Tang removing Renshen and adding one qian of Gui Zhi. After ingestion, consume hot porridge and cover warmly to induce slight sweating.
Chang Shan (Dichroa Root) enters [the formula], strength doubles: Add two or three qian of Chang Shan to Xiao Chai Hu Tang. Folk saying states that Chang Shan should not be used to intercept the pathogen before it is purified. This is unknown; Chang Shan is not an agent to intercept pathogens, but one to drive pathogens out. Zhang Zhongjing used its sprout, named Shu Qi (Dichroae Caulis).
For extreme deficiency, Du Shen Tang (Single Ginseng Decoction) is suitable: For deficient persons with chronic malaria unhealed, decoct one liang of Renshen and five qian of Sheng Jiang (Fresh Ginger) in water; taking it at Wu Geng (3-5 AM) yields excellent results. For the poor, Bai Zhu (Atractylodis Macrocephalae Rhizoma) one liang substitutes for Renshen; for those with more heat, Dang Gui (Angelica Sinensis Root) substitutes.
Single chills without heat constitute Pin Nüe (Yin Malaria), Li Zhong Tang (Regulate the Middle Decoction) supports it: Single chills without heat are named Pin Nüe; it is suitable to treat with Fu Zi Li Zhong Tang (Aconite Regulate the Middle Decoction) plus Chai Hu (Bupleuri Radix).
Single heat constitutes Dan Nüe (Sunny Malaria), Bai Hu Tang (White Tiger Decoction) details it: Single heat without chills is named Dan Nüe; or heat preceding chills is named Re Nüe (Heat Malaria); both are suitable for treatment with Bai Hu Tang plus Gui Zhi. Contemporary physicians treat it with Liu Wei Di Huang Wan (Six-Ingredient Rehmannia Pill) plus Chai Hu and Shao Yao (Paeoniae Radix Alba).
Methods beyond methods, distinguish the subtle: All above are established methods of previous physicians. There are methods beyond methods; one must not fail to distinguish and treat them.
Eliminate Yin shadows, control Yang sunlight: If warming does not produce warmth, it is Firelessness; benefit the source of Fire to eliminate Yin shadows. If cooling does not produce coolness, it is Waterlessness; strengthen the master of Water to control Yang sunlight.
Ta Pu's (Grand Steward's) annotations, do not forget: Wang Taipu's annotations on eliminating Yin and controlling Yang are immortal theories of eternity. Zhao Yangkui followed them, using Ba Wei Wan (Eight-Ingredient Pill) to benefit the source of Fire, and Liu Wei Wan (Six-Ingredient Pill) to strengthen the master of Water; chronic malaria often achieves success with these methods.