余纂诸家治疟论方，其间疑而不取者有三∶盖《内经》所举诸证，后人拟方，多似虚设，且更分端绪，一
也；疟是半表半里之病，仲景虽有发汗之例，实非其正证，而后人则必先主散表，二也；截疟诸方，往往有砒
丹劫药，此非可轻试，况病固不须彼而愈，三也。先教谕撰《观聚方要补》，其意亦在于斯云。
名义 疟，酷虐也。凡疾或寒或热耳，而此疾先寒后热，两疾，似酷虐者也。（《释名》）
《内经》论疟之要 《内经》论病诸篇，惟《疟论》最详。语邪则风寒暑湿四气，皆得留着而病疟。
论邪入客处所，则有肠胃之外，荣气之舍，脊骨之间，五脏募原，与入客于脏腑浅深不同。语其病状，则分寒
热先后，与寒热之多寡，则因反时而病，以应令气生长化收藏之变，此皆外邪所致者也。及乎语温疟在藏者，
止以风寒中于肾。语瘅疟者，止以肺素有热。然冬令之寒，既得以中于肾，则其余四脏令气之邪，又宁无入客
于所属之藏者乎。既肺本气之热为疟，则四脏之气郁而为热者，又宁不似肺之为疟乎。此殆举一隅可以
三隅反也。故陈无择谓内伤七情，饥饱房劳，皆得郁而蕴积痰涎，其病气与卫气并则作疟者，岂非用此例以推
之欤。夫如是内外所伤之邪，皆因其客在荣气之舍，故疟有止发之定期。荣气有舍，犹行人之有传舍也。故疟
荣卫之气日行一周，历五脏六腑十二经络之界分。每有一界分，必有其舍。舍有随经络沉内薄之疟邪，故与日
行之卫气相集则病作，离则病休。其作也，不惟脉外之卫虚，并入于阴，《灵枢》所谓足阳明与荣俱行者，亦
虚以从之。阳明之气虚，则天真因水谷而充大者亦暂衰，所以疟作之际，禁勿治刺，恐伤胃气与天真也。（《
推求师意》）（据《准绳》改订录）
病有内外因 许仁则∶此病之候，乃有数种∶亦有宿患 癖，饮食失宜，因节气初交，亦生此病；亦
有痰 积聚，久不通散，冷热相攻，亦生此疾；亦有地居卑湿，时属暑热，内有宿病，外感恶气，亦生此疾；
亦有盛夏蒸热饮冷，冷热间隔，秋夏气交，亦生此疾。以要言之，终由饮食失常，寒暑乖宜，上热下系。
（《外台》）
疟之为疾，有感于天时者，有因于人事者。《内经》曰夏伤于暑，秋必 疟，此感于天时者也。许仁则谓
痰癖积聚，居湿饮冷，皆致是疾，此因于人事者也。所感不同，其证相类。（《圣济》）
风寒暑湿，邪自外来，饮食居处，邪由内作，此 疟感受之胚胎也，岂特夏伤于暑，秋必为疟哉，古人盖
以其受病最多者言之耳。（《直指》）
语曰，无痰不成疟，内蓄之邪也。又曰，疟得于感风感暑，外来之邪也。内有所积，外有所感，交相为病
。（《一万社草》）
病由风暑寒湿 方夏之时，阴居于内，暑虽入之，势未
能动，候得秋气，阳为之变，汗出遇风，乃成此疾，故曰 疟，皆生于风。（《圣济》）
凡疟因于暑，人皆知之，不知夏令炎热，此自正气之宜，然而人有畏热者，每多避暑就阴，贪凉过度，此
因暑受寒，所以致疟。经曰∶夏暑汗不出者，秋成风疟。义可知也。然又惟禀质薄弱，或劳倦过伤者，尤易感
邪，此所以受邪有浅深，而为病有轻重也。第以病因暑致，故曰受暑，而不知暑有阴阳，疟惟阴暑为病耳。
（《景岳》）
疟疾之作，本由风寒水湿之邪感而致病，亦或有非风非水而衣薄受凉，凡体怯者皆能为疟。及其病深，则
未免因经及藏，因表及里，故有不慎饮食而更甚者，有不慎劳役而增病者。总之无非外邪为之本，岂果因食因
痰有能成疟者耶。今观朱丹溪之言亦以痰食并列，严用和则悉归之痰，盖皆因陈氏（《三因方》）之说，而殊
失《内经》之正意矣。（同上）
夫夏伤于暑，汗出腠开，当风浴水，凄沧之寒伏于皮肤，及遇秋风新凉束之，表邪不能外越，阴欲入而阳
拒之，阳欲出而阴遏之，阴阳相薄而疟作矣。（《必读》）
病必挟痰挟食 《素问》云∶夫疟疾皆生于风。又云:夏伤于暑，秋必病疟。此四时之气使然也。或乘
凉过度，露卧湿处，饮冷当风，饥饱失时，致令脾胃不和，痰积中脘，遂成此疾，所谓无痰不成疟也。（《济
生》）
疟痢皆生于脾胃。若脾胃虚而有痰，外冒风暑，致阴阳纷争，寒热更作，休作有时，病名曰疟云云。由此
而知痰者疟之根。（《简易》）
凡疟皆因腹中停蓄黄水，惟水不行，所以寒热不歇，此疟家受病之处也。（《直指》）
严用和谓胃气不和，痰积中脘而成疟，则自内而生病于
外也。与《素问》风暑外伤虽异，然外既受伤，则内气必郁亦生痰，此自外而生病于内也。疟而挟痰，诚有之
矣，其有以无痰不成疟之一句，则失之偏也。（《微义》）
大抵邪气与正气相遇，则搏而成寒热，令人痰与宿食结于胃中，适与卫气相遇则发，次日邪热得汗气衰故
暂止，邪热复炽故复发，必宿滞去、结痰开、正气旺乃痊，理可见矣。（《六要》）
伤寒少阳证往来寒热无定期，而疟病往来寒热则有定期者，以彼止感受无形之邪风，风者善行数变，故无
定期；此虽亦感无形之邪气，然必郁成有形之痰涎，留滞一处，与日行之卫气相遇，邪正交争乃作，故有定期
也。古谓无痰不成疟以此。夫疟出于痰滞，而痰之滞也，岂独由于风寒，一切外感内伤皆能致之，故又谓无食
不成疟，以食滞成痰也。外感以风寒为举隅，内伤以食为举隅，所当推展以求之者也。又推之，外感内伤既能
郁热蓄痰，独不能停湿滞血而为是证乎，此杨仁斋所以有黄水瘀血之论也。（《医碥》）
邪着少阳 夫人四体安然，外邪得以入而疟之，每伏藏于半表半里，入而与阴争则寒，出而与阳争则热
。半表半里者，少阳也。所以寒热往来，亦少阳所主。谓少阳而兼他经之证，则有之；谓他经而全不涉少阳，
则不成其为疟矣。（《法律》）
少阳乃东方甲木之象，故其脉主弦，此不但初病之脉乃尔，即久疟正虚，脉不鼓指，而弦象亦隐然在内，
所以仲景云∶疟脉自弦。由首及尾，脉之屡迁纵不同，而弦之一字，实贯彻之也。疟邪之舍于营卫，正属少阳
半表半里，始之似疟非疟，与后之经年不解，总一少阳主之。盖疟发必有寒有热，其寒热之往来，适在少阳所
主之界，偏阴则多寒，偏阳
则多热，即其纯热无寒而为瘅疟、为温疟，纯寒无热而为牡疟，要皆自少阳而造其极偏，补偏救敝，亦必返还
少阳之界，阴阳两协于和而后愈也。施汗吐下之法以治实热，施和温之法以治虚寒，无非欲致其和平耳。疟邪
如傀儡，少阳则提傀儡之线索，操纵进退，一惟少阳主张，宁不恢恢乎游刃空虚也耶。（同上）
脉候 诸疟之脉，大约尺寸俱弦，或浮数，或紧实，或缓涩，或虚迟，或左手濡而右手盛，或尺寸盛
而关中濡，不可定名以为弦也。总前治法，弦数多热者寒之，弦迟多寒者温之，浮弦、浮紧、浮数，其邪在表
者可汗，弦实、沉实、数实，其邪在里者可下。（《直指》）
有病久而脉极虚微而无力，似乎不弦，然而必于虚微之中见弦，但不搏手耳，细察可见也。（《丹溪》）
若多寒而但有寒者，其脉或洪实或滑，当作实热治之，若便用桂枝误也。如或多热而但有热者，其脉或空
虚或微弱，当作虚寒治之，若便用白虎汤亦误也。所以欲学人必先问其寒热，或热多热少，或寒多寒少，又诊
脉以参之，百无一失矣。（《纲目》）弦而紧实者宜下之，弦而虚细者宜补之，弦而实大者宜吐之，迟缓者病
自愈，久疟不愈者脉必虚，宜养正去邪。（《回春》）
脉宜弦数滑散，忌沉细虚微。（《慈航》）（按∶散字可疑。又初起脉不见，见于后脉止歇，举在调停方
中治验，并宜参。）
《脉经》云∶疟脉自弦，微则为虚，代散则死。（《微义》）
弦如刀刃者死。弦小者生。（《玉案》）
病后脉来微滑而平缓者，自愈之兆也。（《证治百问》）
证状概略 此病之始，与天行不多别，亦头痛，骨肉酸楚，手足逆冷，口鼻喉舌干，好饮水，毛耸。
腰脊强欲反拗，小便赤，但先寒后热，发作有时，可不审察，其发作日有准。（《外台》引许仁则）
疟疾因外邪客于风府（《和剂》作脏腑），生冷之物，内伤肺胃（《和剂》脾胃），或先寒后热，或先热
后寒，或寒热独作，或连日发，或间日一发（《和剂》此下曰∶或发后三五日再发），寒则肢体颤掉，热则举
身如烧，头疼恶心，烦渴引饮，气息喘急，口苦咽干，脊膂酸疼，肠鸣腹痛。（《鸡峰》）
疟候何如？始而呵欠，继而足冷，面色青黄，身体拘急，寒栗鼓颔，腰脊俱疼，寒去未几，内外皆热，头
痛而渴，但欲饮冷，呕恶妨满而不嗜食者，其候也。或内伏寒痰，寒从背起，冷如掌大。（《直指》）
兆端 有炎暑之时，其人卒然厥逆，色苍苍如死状。人必骇曰∶此痧发也。放痧出血，以救一时之困
，数日之后，转而为疟。讵知厥逆若死，非痧也，乃邪盛于经，经脉一时不能交接，即疟之兆端始发也。徒刺
其血，后必病疟，疟亦不轻，然此疟乃发于经脉之阳者。更有一时暴厥，厥不知人。刺之无血，牙关紧急。医
见之，不曰急痧，即曰中风入脏。刺指无血，则用锋针刺曲池、委中，以出其血。牙关不开，则以铜箸撬齿，
灌矾水而探吐。时余始苏，精神委顿，六脉微虚。一日稍平，次日复厥，厥而无热，微微有汗。此疟从阴出，
不得阳热之化，乃厥疟也。余于夏日，曾治一二，其后亦愈。若既苏之后，投剂不宜，亦不能生。此疟之方起
为然也。（《医学真传》）
疟脉缓大虚，调以甘药。凡诸疟而脉不见，刺十指间出
血，血出必已。故初病脉不出者，多是气血壅遏所致，无用张皇，遽投温补，亦致败事。（《读书记》）
发期 或一日一发，或间日一发，或三日一发。一日一发者易治，间日一发者难愈，三日一发者尤难
愈。（《济生》）
伤之浅者，正气胜邪，日与邪敌，故一日一作而易愈；伤之深者，正不胜邪，不能日与邪敌，必停一二日，
候正气稍充后与邪争，是以间一日或二日始一作而难愈。（《原理》）
在气则发之早，在血则发之晏。浅则日作，深则间之。（《元戎》）
在阳分者易治，阴分者难治。（《丹溪》）
阳为日发，阴为夜发。（《入门》）（按∶此据《明医杂着》）
有感病极深，邪气必自脏传出至腑，其发无时，（按∶《病源》曰∶若腑脏受邪，内外失守，邪气妄行，
所以休作无时也。虞氏或据于此。）若发于午之后、寅之前者，血受病也，为难愈，须渐趱早，亦佳兆也。
（《正传》）
凡疟病自阴而渐阳，自迟而渐早者，由重而轻也；自阳而渐阴，自早而渐迟，由轻而重也。凡感邪极深者，
其发必迟，而多致隔日，必使渐早渐近，方是佳兆。故治此疾者。春夏为易，秋冬为难。（《景岳》）
其始晏而终早者，邪气下行极而之上也。是以疟病欲愈，一日反二三发，其邪愈浅，辄与卫气相搏故也。
（《医学续记》）
寒热虚实 疟虽感于阴邪，至其病变，则有寒有热，人气亦有虚有实，最当详别阴阳虚实而治之。
若初起之时，热
多寒少，烦渴便闭，脉洪而数者，阳邪之胜也，宜以辛凉之剂解其热。若寒多热少，小便调，不渴，脉迟而
小者，阴邪之胜也，宜以辛温之剂散其寒。及发之既久，而便泄腹膨，倦怠脉微者，此病在阳气，惟温补脾肺
，则虚寒自退。若二便秘少，口干烦热者，此病在阴血，惟滋养肾肝，则虚热自敛。疟证虽多，不出虚实寒热
四端，要在临证权宜，不可胶于一见。（《病机汇论》）（按∶此治法不确，姑存之。）
治疟当辨寒热，寒胜者即为阴证，热胜者即为阳证，盖有素禀之寒热，有染触之寒热。然必其表里俱有热
邪，方是火证。若疟至则热，疟止则退，而内无烦热闭结等证，则不得以火证论治。（《景岳》）
至其病变，则有为寒证者，有为热证者，有宜散者，有宜敛者，有宜温者，有宜清者，其要在标本虚实四
字，知此四者而因证制宜，斯尽善矣。其有云伤暑而认暑为火者，有云脾寒而执以为寒者，皆一偏之见，不足
凭也。（同上）
各证通说 《通玄》云∶疟病多种，各不同形，有温疟，有寒疟，有 疟，有劳疟，有鬼疟，此五疟
，内应于五脏。温疟者，先热而后寒。寒疟者，先寒而后热。 疟者，吐逆呕宿汁，腹中生弦癖。劳疟者，不
得用力。鬼疟，不可与饮食。用药不得同。（《医心》）（按∶ ，痰 之 。）
疟之病候，经论载之详矣。先寒后热，名为寒疟。先热后寒，名为温疟。但热无寒，名为瘅疟。但寒无热，
名为牝疟。是皆发作有时云云。然经止论寒温瘅疟所受之因，而不及牝疟。又论温疟、瘅疟所舍之藏，而不及
寒疟。意有互见发明处，学人究阴阳之盛衰，深思以得之云云。以温疟得之于冬，邪气藏于骨髓，则知寒疟乃
我编纂了各家治疗疟疾的论述和方剂，其中有三个方面的内容存疑而未予采纳：第一，《内经》所列举的各种证候，后人拟定的方剂大多像是虚设的，并且又细分出各种头绪；第二，疟疾是半表半里的病证，张仲景虽然有用发汗法的先例，但这实际上并非其正证，而后人则必定先以发散表邪为主；第三，截断疟疾发作的各种方剂中，往往含有砒霜丹药等劫夺正气之药，这些药物不可轻易尝试，况且疾病本来不需要借助它们也能痊愈。先前的教谕（官职名）撰写《观聚方要补》，其用意也在于此。
【名义】
“疟”字，意为酷虐。一般的疾病不过是或寒或热罢了，而这种疾病先冷后热，两种症状交替出现，如同酷虐一般。（出自《释名》）
【《内经》论疟的要旨】
《内经》讨论疾病的各篇中，只有《疟论》最为详尽。谈论致病邪气时，指出风、寒、暑、湿四气，都能留滞体内而引发疟疾。谈论邪气侵入停留的部位时，有在肠胃之外、营气舍止之处、脊骨之间、五脏募原等不同地方，这与邪气侵入脏腑深浅不同有关。谈论病症表现时，区分寒热出现的先后顺序，以及寒热程度的多少，这是因为病情随反常的气候而变化，以顺应自然界生长化收藏的变化，这些都是由外邪引起的。至于谈到温疟发生在脏器的情况，只说是风寒侵袭肾脏。谈到瘅疟的情况，只说是肺中素有热邪。然而冬季的寒气既然能侵袭肾脏，那么其余四季对应其他四脏的邪气，难道不会侵入所属的脏器吗？既然肺本气的热邪能导致疟疾，那么其他四脏之气郁结化为热邪的，难道不会像肺那样导致疟疾吗？这大概是举一反三的道理吧。所以陈无择认为内伤七情、饥饱失调、房劳过度，都能导致郁结并蕴积痰涎，当病气与卫气相搏时就会发作疟疾，这难道不是运用这个例子来推演的吗？像这样，内外所伤的邪气，都是因为客居在营气舍止的地方，所以疟疾有定期发作的特点。营气有舍止之处，就像行人有驿站一样。因此，疟疾涉及荣卫之气每日运行一周，经过五脏六腑十二经络的分界。每一分界处，必然有其舍止之处。舍止之处有随着经络深入体内的疟邪，所以当它与每日运行的卫气相遇时疾病就发作，分离时疾病就休止。发作时，不仅脉外的卫气虚弱，并入于阴分，《灵枢》所说的足阳明经与营气共同运行的情况，也会因虚弱而随之衰退。阳明经气虚弱，那么依靠水谷精微充养的天真元气也会暂时衰弱，所以在疟疾发作之际，禁止进行针刺治疗，恐怕会损伤胃气和天真元气。（出自《推求师意》）（根据《准绳》改订录入）
【病因有内因和外因】
许仁则说：这种病的症候，有好几种：也有因为宿患癖积，饮食不当，遇到节气交替之时，也会生此病；也有因为有痰饮积聚，长久不通散，冷热相互攻冲，也会生此疾；也有因为居住地势低洼潮湿，时令属于暑热，体内有宿疾，外部感受恶气，也会生此疾；也有因为在盛夏蒸热时饮用冷饮，冷热间隔，在秋夏气交之时，也会生此疾。总而言之，最终都是由饮食失常，寒暑不适，上热下寒所致。（出自《外台秘要》）
疟疾这种病，有的感于天时，有的因于人事。《内经》说：“夏伤于暑，秋必痎疟”，这是感于天时的例子。许仁则认为痰癖积聚、居住湿地、饮用冷水，都会导致这种疾病，这是因于人事的例子。所感受的邪气不同，但症状相似。（出自《圣济总录》）
风、寒、暑、湿，邪气从外来；饮食起居，邪气由内作，这是疟疾形成的胚胎，哪里仅仅是夏天伤于暑气，秋天一定得疟疾呢？古人大概是从受病最多的角度来谈的。（出自《直指方》）
俗话说，“无痰不成疟”，这是指内部蓄积的邪气。又说，“疟疾得于感风感暑”，这是指外来的邪气。内有积滞，外有感受，相互交争而致病。（出自《一万社草》）
【病因由风暑寒湿引起】
在夏季的时候，阴气居于体内，暑气虽然进入，势力还不能发动，等到秋季气候到来，阳气发生变化，出汗时遇风，才形成这种病，所以说疟疾，都是生于风邪。（出自《圣济总录》）
凡是疟疾因于暑气，人们都知道，却不知道夏令炎热本是正气适宜的状态，然而有人怕热，常常避暑就阴，贪凉过度，这是因暑受寒，所以导致疟疾。经书说：“夏暑汗不出者，秋成风疟。”道理可以由此知晓。然而只有体质薄弱，或者劳累过度损伤的人，更容易感受邪气，这就是为什么受邪有浅深之分，而发病有轻重之别。仅仅因为病因是暑致，就说受暑，却不知道暑有阴阳之分，疟疾只有阴暑才会致病。（出自《景岳全书》）
疟疾的发生，原本是由风寒水湿之邪感而致病，也有不是因为风和水，而是衣服单薄受凉，凡是身体虚弱的人都可能患疟疾。等到病深入，就难免由经络波及脏腑，由体表波及体内，所以有不慎饮食而加重的，有不慎劳役而增加病情的。总之无非是外邪作为根本，哪里真的是因为食物或痰饮就能形成疟疾呢。现在看朱丹溪的话也将痰和食并列，严用和则全部归之于痰，这都是因为受到陈氏（《三因方》）说法的影响，而大大失去了《内经》的本意。（同上）
夏天伤于暑气，出汗时腠理开泄，当风洗澡，凄冷的寒气潜伏在皮肤，等到遇到秋风新凉束身，表邪不能向外发散，阴欲入而阳拒绝它，阳欲出而阴遏制它，阴阳相互搏击而疟疾发作。（出自《医宗必读》）
【病必挟带痰和食】
《素问》说：“夫疟疾皆生于风。”又说：“夏伤于暑，秋必病疟。”这是四时之气使然。或者乘凉过度，露卧湿处，饮冷当风，饥饱失时，导致脾胃不和，痰积在中脘，遂成此疾，所谓“无痰不成疟”。（出自《济生方》）
疟疾和痢疾都生于脾胃。如果脾胃虚弱而有痰，外部冒犯风暑，导致阴阳纷争，寒热更替发作，休作有时，病名叫做疟云云。由此可知，痰是疟疾的根本。（出自《简易方》）
凡是疟疾都是因为腹中停蓄黄水，只有水液不行，所以寒热不停歇，这是疟疾患者患病的关键所在。（出自《直指方》）
严用和认为胃气不和，痰积在中脘而成疟，这是自内而生病于外。与《素问》的风暑外伤虽然不同，然而外部既已受伤，内部气机必然郁结也会生痰，这是自外而生病于内。疟疾挟带痰邪，确实存在，但如果把“无痰不成疟”这一句话当作绝对真理，那就偏颇了。（出自《医学微义》）
大抵邪气与正气相遇，则搏结而成寒热，令人痰与宿食结于胃中，恰好与卫气相遇就发作，第二天邪热得汗气衰故暂时停止，邪热复炽故再次复发，必须宿滞去除、结痰消散、正气旺盛才能痊愈，道理由此可见。（出自《医学六要》）
伤寒少阳证的往来寒热没有定期，而疟疾的往来寒热则有定期，因为前者只是感受无形的邪风，风性善行数变，所以没有定期；后者虽然也是感受无形之邪气，但必然郁结成有形之痰涎，留滞在一处，与每日运行的卫气相遇，邪正交争才发作，所以有定期。古人说“无痰不成疟”就是这个原因。疟疾出于痰滞，而痰的滞涩，难道仅仅由于风寒吗？一切外感内伤都能导致，所以又说“无食不成疟”，因为食滞能成痰。外感以风寒为例，内伤以食为例，应当推展以求其理。再推而言之，外感内伤既能郁热蓄痰，难道不能停湿滞血而成为这种证候吗？这就是杨仁斋所以有黄水瘀血理论的原因。（出自《医碥》）
【邪着少阳】
人的四肢安然无恙，外邪得以侵入而致疟，每伏藏于半表半里，进入体内与阴争则发冷，外出与阳争则发热。半表半里，就是少阳经。所以寒热往来，也是少阳经所主。如果说少阳兼有其他经脉的证候，那是有的；如果说其他经脉完全不涉及少阳，那就不成其为疟疾了。（出自《医门法律》）
少阳是东方甲木的象征，所以其脉象主弦，这不仅初病时脉象如此，即使久疟正气虚弱，脉象不鼓指，而弦象也隐约在内，所以张仲景说：“疟脉自弦。”从头到尾，脉象屡次迁移变化不同，但“弦”字这一特征，实际上贯穿始终。疟邪舍止于营卫，正属于少阳半表半里，起初似疟非疟，到后来经年不愈，总归由少阳经主导。大概疟疾发作必有寒有热，其寒热的往来，恰好在少阳经所主的界限，偏阴则多寒，偏阳则多热，即使是纯热无寒而为瘅疟、为温疟，纯寒无热而为牡疟，都要从少阳经走向极端偏颇，补救偏弊，也必须返还到少阳经的界限，阴阳两协于和然后痊愈。施以汗、吐、下法治疗实热，施以和、温法治疗虚寒，无非是想使其恢复和平平衡。疟邪如同傀儡，少阳经则是提起傀儡的线索，操纵进退，完全由少阳经主张，岂不是游刃有余吗？（同上）
【脉候】
各种疟疾的脉象，大致尺寸两部都呈弦脉，或者浮数，或者紧实，或者缓涩，或者虚迟，或者左手濡弱而右手盛，或者尺寸盛而关中濡，不能固定地命名为弦脉。总结前面的治法，弦数脉多属热，用寒凉法治疗；弦迟脉多属寒，用温热法治疗；浮弦、浮紧、浮数，邪气在表的可发汗；弦实、沉实、数实，邪气在里的可攻下。（出自《直指方》）
有病久而脉极虚微而无力，似乎不弦，然而必须在虚微之中见到弦象，只是不搏手而已，仔细察看起来可见。（出自《丹溪心法》）
如果多寒而只有寒象的，其脉或洪实或滑，当作实热治疗，如果就用桂枝汤是错误的。如或多热而只有热象的，其脉或空虚或微弱，当作虚寒治疗，如果就用白虎汤也是错误的。所以想学医的人必须先询问寒热情况，是热多还是热少，是寒多还是寒少，又诊脉以参合判断，百无一失。（出自《本草纲目》）弦而紧实的宜攻下，弦而虚细的宜补益，弦而实大的宜催吐，迟缓者病自愈，久疟不愈者脉必虚，宜扶正祛邪。（出自《回春宝鉴》）
脉象宜弦数滑散，忌沉细虚微。（出自《慈航》）（按：散字可疑。又初起脉不见，见于后脉止歇，举在调停方中治验，并宜参。）
《脉经》说：“疟脉自弦，微则为虚，代散则死。”（出自《医学微义》）
弦如刀刃者死。弦小者生。（出自《玉案》）
病后脉来微滑而平缓的，是自愈的征兆。（出自《证治百问》）
【证状概略】
这种病开始的时候，与天行（流行性传染病）没有多大区别，也头痛，骨肉酸楚，手足逆冷，口鼻喉舌干燥，喜欢喝水，毫毛耸立。腰脊强直想要反折，小便赤，只是先冷后热，发作有定时，如果不审察清楚，其发作日子是有规律的。（出自《外台秘要》引许仁则）
疟疾因为外邪客于风府（《和剂局方》作脏腑），生冷之物，内伤肺胃（《和剂局方》脾胃），或者先寒后热，或者先热后寒，或者单独寒或单独热，或者连日发，或者间日一发（《和剂局方》在此之下说：或者发作后三五日再发），发冷时肢体颤抖，发热时全身如火烧，头疼恶心，烦渴引饮，气息喘急，口苦咽干，脊背酸痛，肠鸣腹痛。（出自《鸡峰普济方》）
疟疾的候象如何？开始时呵欠，继而脚冷，面色青黄，身体拘急，寒栗鼓颔（下巴打颤），腰脊俱疼，寒冷过去不久，内外皆热，头痛而渴，只想喝冷水，呕吐恶心妨碍满闷而不想吃东西，这是它的候象。或者内伏寒痰，寒气从背部升起，冷如手掌大小。（出自《直指方》）
【兆端】
在炎暑之时，其人突然厥逆，脸色苍苍如同死状。人们一定惊恐地说：这是痧症发作。放痧出血，以救一时之困，数日之后，转变成疟疾。哪里知道这种厥逆若死，不是痧症，乃是邪气盛于经脉，经脉一时不能交接，即疟疾的兆端开始发作。只刺出其血，后来必定患疟疾，疟疾也不轻，然而这种疟疾是发于经脉之阳的。又有一时暴厥，厥逆不知人。刺之无血，牙关紧急。医生见到这种情况，不说急痧，就说中风入脏。刺手指无血，就用锋针刺曲池、委中，以放出其血。牙关不开，就用铜筷撬齿，灌矾水而探吐。当时我刚刚苏醒，精神委顿，六脉微虚。一天稍平，次日又厥逆，厥逆而无热，微微有汗。这是疟疾从阴出，不得阳热之化，乃厥疟。我在夏日，曾治疗一二例，其后也痊愈了。如果在苏醒之后，投药不当，也不能生存。这是疟疾刚起时的状况。（出自《医学真传》）
疟脉缓大虚，用甘药调理。凡各种疟疾而脉象不见，刺十指间出血，血出必愈。所以初病脉不出者，多是气血壅遏所致，不要惊慌，遽然投用温补，也会导致败事。（出自《读书记》）
【发期】
或者一日一发，或者间日一发，或者三日一发。一日一发的容易治疗，间日一发的难愈，三日一发的尤其难愈。（出自《济生方》）
伤之浅的，正气胜邪，每天与邪敌对，所以一日一作而易愈；伤之深的，正不胜邪，不能每天与邪敌对，必须停一二日，等正气稍充后与邪争，所以是间一日或二日始一作而难愈。（出自《中医原理》）
在气分则发作早，在血分则发作晚。浅则日作，深则间日。（出自《活人心法》）
在阳分者易治，阴分者难治。（出自《丹溪心法》）
阳为日发，阴为夜发。（出自《医学入门》）（按：此据《明医杂著》）
有感病极深的，邪气必自脏传出至腑，其发作无定时，（按：《诸病源候论》说：若腑脏受邪，内外失守，邪气妄行，所以休作无时也。虞氏或许依据于此。）如果发于午之后、寅之前的，是血受病，为难愈，须渐渐提早，也是佳兆。（出自《丹溪心法附余》）
凡是疟病自阴而渐阳，自迟而渐早的，是由重而轻；自阳而渐阴，自早而渐迟的，是由轻而重。凡是感邪极深的，其发作必迟，而多导致隔日，必须使发作渐渐早渐渐近，才是佳兆。所以治疗此疾，春夏为易，秋冬为难。（出自《景岳全书》）
其始晚而终早的，是邪气下行极而上行。所以疟病欲愈，一日反而发作二三次的，其邪越浅，辄与卫气相搏的缘故。（出自《医学续记》）
【寒热虚实】
疟疾虽然感于阴邪，到了病变阶段，则有寒有热，人气也有虚有实，最应当详细辨别阴阳虚实而治疗。如果初起之时，热多寒少，烦渴便闭，脉洪而数的，是阳邪胜，宜用辛凉之剂解其热。如果寒多热少，小便调，不渴，脉迟而小的，是阴邪胜，宜用辛温之剂散其寒。及发作既久，而便泄腹膨，倦怠脉微的，这是病在阳气，只有温补脾肺，则虚寒自退。如果二便秘少，口干烦热的，这是病在阴血，只有滋养肾肝，则虚热自敛。疟证虽多，不出虚实寒热四端，关键在于临证权宜，不可胶执于一见。（出自《病机汇论》）（按：此治法不确切，姑且保存。）
治疟应当辨别寒热，寒胜者即为阴证，热胜者即为阳证，大概有素禀的寒热，有染触的寒热。然而必须表里俱有热邪，才是火证。如果疟疾发作时热，停止时退，而内无烦热闭结等证，则不能以火证论治。（出自《景岳全书》）
到了病变阶段，有为寒证的，有为热证的，有宜散的，有宜敛的，有宜温的，有宜清的，关键在于标本虚实四字，知道这四者而因证制宜，才算尽善尽美。那些说伤暑而认暑为火的，说脾寒而执以为寒的，都是一偏之见，不足凭信。（同上）
【各证通说】
《通玄》说：疟病多种，各不同形，有温疟，有寒疟，有痰疟，有劳疟，有鬼疟，这五疟，内应于五脏。温疟者，先热而后寒。寒疟者，先寒而后热。痰疟者，吐逆呕宿汁，腹中生弦癖。劳疟者，不得用力。鬼疟，不可与饮食。用药不得同。（出自《医心方》）（按：痰，痰之误。）
疟疾的病候，经论记载得很详细了。先寒后热，名为寒疟。先热后寒，名为温疟。但热无寒，名为瘅疟。但寒无热，名为牝疟。这些都是发作有定时云云。然而经书只论寒温瘅疟所受之因，而不及牝疟。又论温疟、瘅疟所舍之藏，而不及寒疟。意思是有互见发明之处，学人究阴阳之盛衰，深思以得之云云。以温疟得之于冬，邪气藏于骨髓，则知寒疟乃……
I have compiled the theories and prescriptions for treating malaria from various schools. There are three aspects among them that I doubted and did not adopt: First, the syndromes listed in *Neijing* (Yellow Emperor's Inner Canon) were followed by later generations who formulated prescriptions that seemed largely fictitious, and further subdivided into various categories; Second, malaria is a disease of the half-exterior and half-interior level. Although Zhang Zhongjing provided examples of using sweating methods, this was actually not its typical presentation, whereas later practitioners invariably prioritized dispersing exterior pathogens; Third, various prescriptions to arrest malaria often contain arsenic pills or other drastic drugs that deplete healthy qi. These should not be lightly tried, especially since the disease can heal without them. The former Instructor (Jiaoyu), in writing *Guan Ju Fang Yao Bu*, had similar intentions.
[Nomenclature]
The character "Malaria" (Nüe) means cruel or tyrannical. Ordinary diseases involve either cold or heat, but this disease involves alternating chills and fever, resembling cruelty. (From *Shiming*)
[Key Points on Malaria in *Neijing*]
Among the chapters in *Neijing* discussing diseases, only the *Malaria Lun* (Treatise on Malaria) is most detailed. Regarding pathogenic factors, it states that Wind, Cold, Summerheat, and Dampness can all linger in the body and cause malaria. Regarding the location where pathogens lodge, they may stay outside the intestines and stomach, in the abodes of Ying (Nutritive) Qi, between the spinal bones, or at the Mu-Yuan (Alarm-Source) areas of the Zang organs, differing from pathogens invading the depth of the Zang-Fu organs. Regarding symptoms, it distinguishes the sequence of cold and heat, and the degree of cold and heat, noting that illness occurs due to contrary seasonal climates, responding to the variations of Growth, Transformation, Storage, and Harvest in nature. All these are caused by external pathogens. When discussing Warm Malaria (Wen Nue) involving the Zang organs, it attributes it solely to Wind-Cold attacking the Kidney. When discussing Dan Malaria (Dan Nue), it attributes it solely to pre-existing Heat in the Lung. However, if Winter Cold can attack the Kidney, why would the pathogens corresponding to the other four seasons not invade their respective Zang organs? If the inherent Heat of the Lung causes malaria, why would Heat generated by stagnation in the other four Zang organs not similarly cause malaria? This illustrates the principle of inferring other cases from one example. Thus, Chen Wuyue stated that internal injuries from Seven Emotions, improper diet, or sexual excess can lead to stagnation and accumulation of Phlegm-Fluids. When pathogenic Qi combines with Wei (Defensive) Qi, malaria ensues. Is this not an application of such reasoning? In this way, both internal and external pathogens cause malaria because they lodge in the abodes of Ying Qi, resulting in regular intervals of onset and remission. Ying Qi has abodes, just as travelers have relay stations. Therefore, the circulation of Ying and Wei Qi completes one cycle daily, passing through the boundaries of the Five Zang, Six Fu, and Twelve Meridians. At each boundary, there must be an abode. Pathogenic factors of malaria following the meridians sink inward and press against these abodes. When they meet the daily circulating Wei Qi, the disease manifests; when they separate, the disease rests. During onset, not only is the Wei Qi outside the vessels deficient, but it also enters the Yin aspect. As stated in *Lingshu* (Spiritual Pivot), the Foot Yangming Meridian travels with Ying Qi; this too becomes deficient and follows. Deficiency of Yangming Qi leads to a temporary decline in Tianzhen (Innate) Qi, which is nourished by food and water. Therefore, during malaria attacks, acupuncture is prohibited to avoid damaging Stomach Qi and Innate Qi. (From *Qiu Jiu Shi Yi*, revised according to *Zhun Sheng*)
[Etiology: Internal and External Factors]
Xu Renze said: The manifestations of this disease vary. Some arise from chronic Pi-Ji (masses/accumulations) and improper diet, occurring during solar term transitions. Others arise from Phlegm and accumulations that have not been dispersed for a long time, with Cold and Heat attacking each other. Others result from living in damp, low-lying areas during hot summer seasons, combined with internal chronic illness and external exposure to noxious Qi. Others occur from drinking cold beverages during the intense heat of midsummer, creating a gap between Cold and Heat, leading to illness during the transition of Autumn and Summer. In summary, it ultimately stems from dietary irregularity, inappropriate exposure to Cold and Heat, and upper Heat with lower deficiency. (From *Waitai Mi Yao*)
Malaria arises from either Heavenly timing (external climate) or Human affairs (internal lifestyle). *Neijing* states: "Summer injury by Summerheat leads to Malaria in Autumn." This is due to Heavenly timing. Xu Renze attributes it to Phlegm-Pi, damp residence, and cold drinks, which is due to Human affairs. The causes differ, but the symptoms are similar. (From *Shengji Zonglu*)
Wind, Cold, Summerheat, and Dampness are external pathogens; Diet and Living are internal sources. These form the embryonic stage of malaria. It is not merely that summer Summerheat injury guarantees autumn malaria; the ancients spoke of the most common scenario. (From *Zhi Zhi Fang*)
It is said, "No Phlegm, No Malaria," referring to internal accumulation. It is also said, "Malaria results from Wind and Summerheat," referring to external pathogens. Internal accumulation and external invasion interact to cause disease. (From *Yi Wan She Cao*)
[Etiology: Wind, Summerheat, Cold, Dampness]
In early summer, Yin resides internally. Although Summerheat enters, its force is not yet active. When Autumn Qi arrives, Yang changes. Sweating followed by wind exposure creates this disease. Thus, Malaria is born from Wind. (From *Shengji Zonglu*)
Everyone knows malaria is related to Summerheat, but fails to realize that summer heat is the natural state of Zheng Qi. Those who fear heat seek shade and overindulge in coolness, contracting Cold due to Summerheat habits, thus causing malaria. The Classics say: "Those who do not sweat in summer Summerheat will develop Wind-Malaria in autumn." The meaning is clear. However, those with weak constitutions or excessive fatigue are more susceptible. This explains why pathogen penetration varies in depth and severity. Although the cause is Summerheat, one must understand the distinction between Yin and Yang Summerheat; only Yin Summerheat causes malaria. (From *Jing Yue Quan Shu*)
Malaria originates from Wind, Cold, Water, and Dampness. Even non-Water/Damp causes like thin clothing and cold exposure can cause malaria in the frail. As the disease deepens, it moves from meridians to Zang organs, from exterior to interior. Neglecting diet or labor worsens it. Ultimately, external pathogens are the root; it is not truly caused by food or Phlegm alone. Zhu Danxi listed Phlegm and Food together, while Yan Yonghe attributed it all to Phlegm, influenced by Chen Shi (*San Yin Fang*), deviating from the true intent of *Neijing*. (Same source)
Summer Summerheat injury opens pores. Exposure to wind and water traps chilling Cold in the skin. When autumn coolness binds the exterior, external pathogens cannot exit. Yin tries to enter but Yang rejects it; Yang tries to exit but Yin blocks it. The struggle between Yin and Yang causes malaria. (From *Yi Zong Bi Du*)
[Malaria Always Involves Phlegm and Food]
*Suwen* says: "All malaria arises from Wind." And: "Summer Summerheat injury leads to malaria in autumn." This is due to the Four Seasons' Qi. Overcooling, sleeping in damp places, drinking cold water in the wind, or irregular meals disrupt Spleen-Stomach harmony, causing Phlegm accumulation in the Middle Jiao, leading to malaria—"No Phlegm, No Malaria." (From *Ji Sheng Fang*)
Malaria and Dysentery originate in the Spleen and Stomach. If Spleen-Stomach is deficient with Phlegm, and exposed to Wind/Summerheat, Yin-Yang conflict causes alternating cold and heat. Thus, Phlegm is the root of malaria. (From *Jian Yi Fang*)
All malaria involves stagnant Yellow Fluid in the abdomen. Because fluid does not move, cold and heat do not cease. This is the key site of pathology in malaria patients. (From *Zhi Zhi Fang*)
Yan Yonghe believed Stomach Qi disharmony and Phlegm in the Middle Jiao cause malaria, originating internally and manifesting externally. Unlike *Suwen*'s external Wind/Summerheat, external injury causes internal Qi stagnation and Phlegm generation, originating externally and manifesting internally. While malaria involves Phlegm, claiming "No Phlegm, No Malaria" as an absolute rule is biased. (From *Yi Xue Wei Yi*)
Generally, when Pathogenic Qi meets Healthy Qi, they struggle causing cold and heat, leading to Phlegm and retained food binding in the Stomach. When this meets Wei Qi, the disease erupts. The next day, sweat reduces pathogenic heat, causing temporary remission. Recurrence happens as heat flares again. Recovery requires resolving retention, dissipating Phlegm, and strengthening Healthy Qi. (From *Yi Xue Liu Yao*)
Shaoyang syndrome in Cold Damage features irregular alternating cold and heat because it involves formless Wind, which moves rapidly. Malaria involves formless pathogens that stagnate into tangible Phlegm-Fluids, lodging in one place. Meeting daily circulating Wei Qi causes struggle and regular onset. Hence, "No Phlegm, No Malaria." Since Phlegm stagnation causes malaria, and Phlegm can result from any external/internal factor, it is also said "No Food, No Malaria," as food stagnation creates Phlegm. External factors use Wind/Cold as examples; internal factors use Food. One should extrapolate. Furthermore, if external/internal factors can cause Heat-Phlegm, can they not cause Damp-Blood stasis? This explains Yang Renzhai's theory of Yellow Fluid and Blood Stasis. (From *Yi Que*)
[Pathogen Lodging in Shaoyang]
When limbs are calm, external pathogens enter and cause malaria, hiding in the Half-Exterior/Half-Interior. Entering to contend with Yin causes cold; exiting to contend with Yang causes heat. Half-Exterior/Half-Interior is Shaoyang. Thus, alternating cold and heat is governed by Shaoyang. Shaoyang may coexist with other meridians, but malaria cannot exist without Shaoyang involvement. (From *Yi Men Fa Lv*)
Shaoyang corresponds to Wood of the East (Jia), so its pulse is Wiry (Xian). This applies even in chronic malaria with deficiency, where the Wiry quality remains hidden. Thus, Zhang Zhongjing said: "Malaria pulse is naturally Wiry." Throughout the disease course, despite pulse changes, the Wiry characteristic persists. Malaria pathogens lodge in Ying-Wei at the Shaoyang Half-Exterior/Half-Interior level. Whether initial mild cases or chronic years-long cases, Shaoyang governs. Malaria always has cold and heat; their alternation fits Shaoyang's domain. Bias toward Yin causes more cold; bias toward Yang causes more heat. Even pure heat (Dan/Wen Malaria) or pure cold (Mu/Mao Malaria) represents extremes from Shaoyang. Correction requires returning to Shaoyang balance, harmonizing Yin and Yang. Sweating, Vomiting, and Purging treat excess heat; Harmonizing and Warming treat deficiency cold. The goal is peace. Malaria is like a puppet; Shaoyang holds the strings. (Same source)
[Pulse Diagnosis]
Pulses in various malaria types are generally Wiry at Cun and Chi positions, or Floating-Rapid, Tight-Solid, Slow-Slippery, Deficient-Slow, Left Soft/Right Full, or Full Cun-Chi/Soft Guan. It cannot be fixed solely as Wiry. Summarizing treatments: Wiry-Rapid indicates Heat, treat with Cold methods. Wiry-Slow indicates Cold, treat with Warm methods. Floating-Wiry/Tight/Rapid indicate Exterior pathogens, treat with Sweating. Wiry-Solid/Sunken-Solid/Rapid-Solid indicate Interior pathogens, treat with Purging. (From *Zhi Zhi Fang*)
In chronic disease, pulses may be extremely deficient and faint, seemingly not Wiry, but careful observation reveals a Wiry quality within the deficiency, though not striking the fingers. (From *Dan Xi Xin Fa*)
If predominantly cold, pulse may be Full-Solid or Slippery; treat as Excess Heat. Using Guizhi Tang would be wrong. If predominantly heat, pulse may be Empty or Weak; treat as Deficiency Cold. Using Baihu Tang would be wrong. Physicians must ask about cold/heat ratios and correlate with pulse diagnosis to avoid errors. (From *Ben Cao Gang Mu*) Wiry-Tight-Solid requires Purging. Wiry-Deficient-Fine requires Tonifying. Wiry-Excess-Large requires Vomiting. Slow-Slow indicates self-healing. Chronic malaria with deficient pulse requires Supporting Healthy Qi and Expelling Pathogens. (From *Hui Chun Bao Jian*)
Pulses should be Wiry-Rapid-Slippery-Scattered; avoid Sunken-Fine-Deficient-Faint. (From *Ci Hang*) [Note: "Scattered" is questionable. Also, absent pulse initially may appear later as intermittent. See adjustment formulas.]
*Mai Jing* states: "Malaria pulse is naturally Wiry. Faint indicates Deficiency. Dai (Intermittent) and Scattered indicate Death." (From *Yi Xue Wei Yi*)
Wiry like a knife edge indicates Death. Small Wiry indicates Survival. (From *Yu An*)
Post-illness pulse becoming Micro-Slippery and Smooth indicates self-healing. (From *Zheng Zhi Bai Wen*)
[General Symptoms]
Early stages resemble epidemic fevers: headache, bone/muscle soreness, cold extremities, dry mouth/nose/throat/tongue, thirst, piloerection. Stiff back/spine wanting to arch, red urine. Key feature: Chills precede Fever, with regular timing. (From *Waitai Mi Yao* citing Xu Renze)
External pathogens lodge in Fengfu (or Zang-Fu per *He Ji Ju Fang*), internal damage from cold/raw food affects Lung/Stomach (or Spleen/Stomach per *He Ji Ju Fang*). Symptoms include: Chills then Fever, or Fever then Chills, or isolated chills/fever, daily or every-other-day onset. Chills cause trembling; Fever feels like burning. Headache, nausea, irritability, thirst, rapid breathing, bitter taste, dry throat, back pain, borborygmus, abdominal pain. (From *Ji Feng Pu Ji Fang*)
Onset includes yawning, cold feet, blue-yellow complexion, stiffness, shivering/chattering teeth, back pain. After chills, internal/external heat, headache, thirst for cold water, vomiting, fullness, anorexia. Or latent Cold-Phlegm rising from back, cold patch size of palm. (From *Zhi Zhi Fang*)
[Prodrome]
During heat, sudden collapse/pale face mimics death. Mistaken for Sha (sand/heat stroke), treated with bloodletting. Days later, turns to malaria. Actually, this collapse is severe pathogen blocking meridians, preventing connection, signaling impending malaria. Mere bloodletting leads to serious malaria (Yang meridian type). Another case: sudden collapse, unconsciousness, no blood from pricking, locked jaw. Mistaken for acute Sha or Stroke. Pricked Quchi/Weizhong for blood, pried jaw open, induced vomiting with alum water. Patient woke exhausted, micro-deficient pulse. Next day relapsed without fever, slight sweat. This is Jue Malaria (from Yin, lacking Yang transformation). Treated successfully in summer. Improper medication after waking could be fatal. This describes early malaria presentation. (From *Yi Xue Zhen Chuan*)
Malaria with Slow-Large-Deficient pulse is treated with Sweet Medicines. If pulse is absent, prick ten fingers to bleed; cure follows. Absent pulse initially is due to Qi/Blood blockage, not panic or premature tonification. (From *Du Shu Ji*)
[Timing of Onset]
Daily, every-other-day, or every-three-day onset. Daily is easiest; every-other-day is harder; every-three-day is hardest. (From *Ji Sheng Fang*)
Shallow injury: Healthy Qi defeats Pathogen daily, easy cure. Deep injury: Healthy Qi loses, pauses 1-2 days to replenish before fighting, causing delayed onset/difficulty. (From *Zhong Yi Yuan Li*)
Qi level = Early onset; Blood level = Late onset. Shallow = Daily; Deep = Intermittent. (From *Huo Ren Xin Fa*)
Yang level = Easy; Yin level = Hard. (From *Dan Xi Xin Fa*)
Yang = Daytime onset; Yin = Nighttime onset. (From *Yi Xue Ru Men*) [Per *Ming Yi Za Zhuo*]
Deep infection: Pathogen moves from Zang to Fu, irregular timing. [Source: *Bing Yuan*]. Onset between Wu (noon) and Yin (3am) indicates Blood involvement, hard to cure. Gradual earlier onset is good sign. (From *Dan Xi Xin Fa Fu Yu*)
Shift from Yin to Yang, late to early = Heavy to Light. Shift from Yang to Yin, early to late = Light to Heavy. Deep infection = Late onset, often intermittent. Earlier onset is good. Treatment easier in Spring/Summer, harder in Autumn/Winter. (From *Jing Yue Quan Shu*)
Late start becoming early end = Pathogen moving down then up. Frequent daily attacks near recovery = Pathogen shallow, struggling with Wei Qi. (From *Yi Xue Xu Ji*)
[Cold, Heat, Deficiency, Excess]
Though caused by Yin pathogens, manifestations vary (Cold/Heat, Def/Ex). Must distinguish Yin/Yang Def/Excess.
Initial stage: More Heat than Cold, irritability, constipation, Full-Rapid pulse = Yang Excess. Treat with Acrid-Cool to resolve Heat.
More Cold than Heat, normal urination, no thirst, Slow-Small pulse = Yin Excess. Treat with Acrid-Warm to disperse Cold.
Long-term: Diarrhea, distension, fatigue, Micro pulse = Yang Deficiency. Warm/Tonify Spleen/Lung to resolve Cold.
Constipation/Dry mouth/Fever = Yin/Blood Deficiency. Nourish Kidney/Liver to resolve Deficiency Heat.
Malaria covers Def/Ex/Cold/Heat. Clinical flexibility is key. (From *Bing Ji Hui Lun*) [Note: Treatment view considered inaccurate here, preserved for reference.]
Distinguish Cold/Heat in treatment. Cold dominance = Yin Syndrome. Heat dominance = Yang Syndrome. Consider constitutional vs. acquired Cold/Heat. Fire Syndrome requires Interior/Exterior Heat signs. If fever stops when malaria stops, without interior heat signs, do not treat as Fire. (From *Jing Yue Quan Shu*)
Manifestations include Cold/Heat Syndromes, requiring Dispersing/Astringing/Warming/Clearing. Key is Root/Branch/Def/Ex. Knowing these allows appropriate treatment. Viewing Summerheat purely as Fire or Spleen Cold purely as Cold is biased. (Same source)
[General Discussion of Specific Types]
*Tong Xuan* states: Various malaria types correspond to Five Zang.
Warm Malaria (Wen Nue): Heat then Cold.
Cold Malaria (Han Nue): Cold then Heat.
Tan Malaria (Phlegm Malaria): Vomiting old bile, abdominal masses.
Lao Malaria (Labor Malaria): Inability to exert effort.
Gui Malaria (Ghost Malaria): Cannot eat/drink.
Medications differ. (From *Yi Xin Fang*) [Note: Tan is likely a typo for Phlegm].
Classics detail symptoms: Cold-then-Heat = Han Nue. Heat-then-Cold = Wen Nue. Heat-only = Dan Nue. Cold-only = Pin Nue. All have regular timing. Classics discuss causes for Han/Wen/Dan but omit Pin. Discusses organ lodging for Wen/Dan but omits Han. Students should infer Yin-Yang balance from these gaps. Wen Nue winter origin/storage in Marrow implies Han Nue...