疫疟之为病，因天时寒热不正，邪气乘虚而袭膜原，欲出表而不能透达，欲陷里而未得空隙，故作寒热
往来，或一日二、三次，或一次而无定期也。寒轻热重，口渴有汗，右脉多胜于左，是为疫疟也。盖疫者役
也，若役使然，大概沿门合境，长幼之疟相似者，皆可以疫名之。竟不必拘于一定之见证，当随时
令而治，此司天运气之所宜考也，拟以宣透膜原法为主。
鬼疟者，因卒感尸疰客忤，寒热日作，恶梦多端，时生恐怖，言动异常，脉来乍大乍小者是。俗云夜发
为鬼疟者非。独有通一子谓无鬼疟，不啻阮瞻一流人也。丰历见之，患是证者，都系体弱属阴之人，而强壮
属阳之体，无一患者。古云∶壮士不病疟，殆指鬼疟而言。拟用驱邪辟祟法治之……。
程曦曰∶（佚）
元气本虚，感邪患疟，名虚疟也。其证寒热交作，自汗倦卧，饮食并减，四肢乏力，脉象举按俱弦，
寻之则弱，宜以补气升阳法治之。又有久患疟疾，脾胃累虚，亦名虚疟也。盖胃虚则恶寒，脾虚则发热，寒
则洒洒，热则烘烘，脉象浮之则濡，按之则弱，此宜营卫双调法，则疟疾不截而自罢矣。倘有肢凉便
泻者，均加附子、干姜。或吐涎不食者，并加砂仁、半夏。治虚疟之法，尽于斯矣。
劳疟者，因疟疾日久延为痨也。或因久病劳损，气血两虚而病疟也。或因劳役过度，营卫空虚而患疟也。
脉象或软或弱，或小滑，或细数，发热恶寒，寒中有热，热中有寒，或发于昼，或发于夜，每遇小劳即发。
气虚者多汗，饮食少进。血虚者，午后发热，至晚微汗乃解。此似疟非疟也，若误为疟治，而投剥削之剂，
未有不成瘵疾者也。拟用营卫双调法，气虚者倍加参、 ，血虚者倍加归、芍。倘寒热厘清，按时而至，脉兼
弦象，显出少阳兼证，始可佐柴胡、青蒿，否则不可耳。
Yi Malaria (Epidemic Malaria) is a disease caused by abnormal fluctuations in seasonal cold and heat, where pathogenic factors invade the Mo Yuan (the space between the exterior and interior) taking advantage of bodily deficiency. The pathogens attempt to reach the exterior but fail to penetrate, and attempt to sink into the interior but find no opening; thus, alternating chills and fever occur. These may happen two or three times a day, or once without a regular schedule. Symptoms include mild chills with heavy fever, thirst, and sweating. The right pulse is often stronger than the left; this constitutes Yi Malaria. The term "Yi" implies service or servitude, suggesting that like being conscripted, the illness spreads from door to door across communities, affecting people of all ages with similar malaria symptoms. One should not rigidly adhere to fixed manifestations but must treat according to the season and climate, which aligns with the study of Si Tian Yun Qi (Six Qi and Five Movements). The proposed primary treatment method is Xuan Tou Mo Yuan Fa (Method of Venting and Penetrating the Mo Yuan).
Gui Malaria (Ghost Malaria) arises from sudden exposure to Shi Zhu Ke Wu (pathogenic influences attributed to corpse qi or hostile spirits), characterized by daily chills and fever, numerous nightmares, frequent fear, abnormal speech and behavior, and a pulse that fluctuates between large and small. The folk belief that night-onset malaria is Gui Malaria is incorrect. Only Tong Yizi claimed that Gui Malaria does not exist, akin to Ruan Zhan's stance on atheism. I, Lei Feng, have observed patients with this condition; they are invariably individuals with weak, Yin-deficient constitutions. No robust, Yang-excess individuals suffer from it. Ancient texts state, "Strong men do not suffer from malaria," likely referring specifically to Gui Malaria. The proposed treatment is Qu Xie Bi Sui Fa (Method of Expelling Evil and Warding Off Maleficence)... Cheng Xi states: (Text missing)
Xu Malaria (Deficiency Malaria) occurs when primordial Qi is inherently deficient, and upon contracting pathogens, malaria develops. Symptoms include alternating chills and fever, spontaneous sweating, fatigue and desire to lie down, reduced appetite, and weakness in the four limbs. The pulse feels wiry upon both superficial and deep palpation, but becomes weak when searched for carefully. The appropriate treatment is Bu Qi Sheng Yang Fa (Method of Tonifying Qi and Raising Yang). Additionally, long-standing malaria can lead to deficiency of the Spleen and Stomach, also termed Xu Malaria. Stomach deficiency causes aversion to cold, while Spleen deficiency causes fever; aversion to cold presents as shivering, and fever presents as a sensation of internal heat. The pulse is soft upon superficial palpation and weak upon deep pressure. In such cases, Ying Wei Shuang Tiao Fa (Method of Harmonizing Ying and Wei) is suitable, allowing the malaria to cease spontaneously without forced interception. If accompanied by cold limbs and loose stools, Fuzi (Aconiti Lateralis Radix Praeparata) and Ganjiang (Zingiberis Rhizoma) should be added. If there is salivation and inability to eat, Sharen (Amomi Fructus Rotundus) and Banxia (Pinelliae Rhizoma) should be added. These constitute the methods for treating Xu Malaria.
Lao Malaria (Exhaustion Malaria) results from prolonged malaria degenerating into Lao Disease (Consumption). It may also arise from chronic illness causing exhaustion and dual deficiency of Qi and Blood, leading to malaria, or from overexertion causing emptiness in Ying and Wei, resulting in malaria. The pulse may be soft, weak, small and slippery, or fine and rapid. Symptoms include fever and aversion to cold, with heat within chills and chills within heat, occurring either during the day or night, triggered by even slight exertion. Qi deficiency manifests as excessive sweating and poor dietary intake. Blood deficiency manifests as afternoon fever, resolving only with slight sweating at night. This resembles malaria but is not typical malaria; if mistakenly treated as malaria using draining and attacking agents, it will inevitably progress to Zhai Ji (Tuberculous Consumption). The proposed treatment is Ying Wei Shuang Tiao Fa (Method of Harmonizing Ying and Wei). For Qi deficiency, add extra Renshen (Ginseng Radix et Rhizoma) and [missing character, typically Huangqi]; for Blood deficiency, add extra Danggui (Angelicae Sinensis Radix) and Shaoyao (Paeoniae Radix Alba). Only if the chills and fever become distinct and occur regularly, and the pulse exhibits a wiry quality indicating Shaoyang syndrome complications, may Chaihu (Bupleuri Radix) and Qinghao (Artemisiae Annuae Herba) be used as adjuvants; otherwise, they should not be used.