夫温疟与寒疟安舍？温疟者，得之冬中于风寒，寒气藏于骨髓之中，至春则阳气大发，
邪气不能出，因遇大暑，脑髓烁，脉肉消释，腠理发泄，因有所用力，邪气与汗偕出。此病
藏于肾，其气先从内出之于外，如此则阴虚而阳盛，则热。衰则气复反入，入则阳虚，阳虚
则寒矣。故先热而后寒，名曰温疟。
疟先寒而后热，此由夏伤于大暑，汗大出，腠理开发，因遇夏气凄沧之水寒，寒之藏于
腠理皮肤之中，秋伤于风，则病盛矣。夫寒者，阴气也；风者，阳气也。先伤于寒而后伤于
风，故先寒而后热，病以时作，名曰寒疟。先伤于风而后伤于寒，故先热而后寒，亦以时作
，名曰温疟。
夫病疟六七日，但见热者，温疟矣。
夫 疟者，夏伤于暑也。其病秋则寒甚，冬则寒轻，春则恶风，夏则多汗者，然其蓄作
有时。以疟之始发，先起于毫毛，伸欠乃作，寒栗鼓颔，腰脊痛，寒去则外内皆热，头痛而
渴欲饮，何气使然？此阴阳上下交争，虚实更作，阴阳相移也。阳并于阴，则阴实阳虚，阳
明虚则寒栗鼓颔；巨阳虚则腰背头项痛；三阳俱虚，则阴气胜，阴气胜则骨寒而痛，寒生于
内，故中外皆寒。阳盛则外热，阴虚则内热，内外皆热，则喘而渴欲饮。此得之夏伤于暑，
热气盛，藏之于皮肤之间，肠胃之外，此荣气之所舍。此令汗出空疏，腠理开，因得秋气
，汗出遇风乃得之，及以浴，水气舍于皮肤之内，与卫气并居。卫气者，昼日行阳，夜行于
阴，此气得阳如外出，得阴如内搏，内外相搏，是以日作。
其间日而作者，谓其气之舍深，内搏于阴，阳气独发，阴邪内着，阴与阳争不得出，是
以间日而作。
温疟与寒疟的区别在哪里？所谓温疟，是因为冬季感受了风寒之邪，寒气潜伏在骨髓之中。到了春季，阳气大发，但邪气无法排出；又恰逢大暑天气，脑髓被灼热，脉肉消解，腠理（皮肤毛孔）开泄，此时如果有所用力劳作，邪气便随着汗液一起排出体外。这种病邪藏于肾中，其气机先从体内出于体表，这样就会导致阴虚而阳盛，从而产生发热。当热势衰退时，气机又反向内入，内入则导致阳虚，阳虚就会感到寒冷。所以表现为先发热而后发冷，称为温疟。
疟疾若先恶寒而后发热，这是因为夏季遭受大暑侵袭，大汗淋漓，腠理开发，又遇到夏季凄冷的寒水之气（或指贪凉饮冷、涉水受寒），寒气潜伏在腠理和皮肤之中；到了秋季再感受风邪，病情就会加重。寒属于阴气，风属于阳气。先伤于寒而后伤于风，所以先恶寒而后发热，疾病按时发作，称为寒疟。若是先伤于风而后伤于寒，所以先发热而后恶寒，也是按时发作，称为温疟。
至于疟疾，是由于夏季伤于暑气所致。其病症表现为：秋天时寒冷严重，冬天时寒冷轻微，春天时怕风，夏天时多汗，然而它的发作是有固定时间的。在疟疾刚开始发作时，先是毫毛竖立，打哈欠伸展肢体，接着出现寒战、下巴颤抖，腰脊疼痛；寒战过去后，内外都发热，头痛且口渴想喝水。是什么气导致这样的呢？这是阴阳上下交争，虚实交替变化，阴阳相互移易的结果。阳气并入阴分，则阴实而阳虚，阳明经气虚弱则寒战、下巴颤抖；巨阳经（太阳经）气虚弱则腰背头项疼痛；三阳经（太阳、阳明、少阳）俱虚，则阴气胜，阴气胜则骨头寒冷而痛，寒从内生，所以内外皆寒。阳气盛则外热，阴虚则内热，内外皆热，就会气喘且口渴想喝水。这是由于夏季伤于暑气，热气旺盛，潜伏在皮肤之间、肠胃之外，这是营气所居之处。这使得汗孔疏松，腠理开泄，因而受到秋气影响，出汗时遇风而致病，或者洗澡时，水气停留在皮肤之内，与卫气并居。卫气白天行于阳分，夜晚行于阴分，此邪气随卫气外出到阳分则发热，随卫气内搏于阴分则恶寒，内外相搏，所以每天发作。
What is the distinction between Warm Malaria (Wen Nue) and Cold Malaria (Han Nue)? Warm Malaria arises from contracting Wind-Cold in winter; the pathogenic Cold hides within the Marrow. By spring, when Yang Qi expands vigorously, the pathogen cannot exit. If accompanied by intense summer heat, the brain marrow is scorched, vessels and flesh are depleted, and Cou Li (pores/skin texture) open and sweat is released. If physical exertion occurs at this time, the pathogen exits along with the sweat. This disease resides in the Kidney. Its Qi first moves from the interior to the exterior, resulting in Yin deficiency and Yang excess, which generates Heat. When the Heat declines, the Qi reverses and returns inward; inward movement leads to Yang deficiency, and Yang deficiency results in Cold. Thus, it presents as fever followed by chills, named Warm Malaria.
Malaria that begins with chills followed by fever occurs because of Summer-Heat injury in summer. Profuse sweating opens the Cou Li, and one encounters cold water or cold air (associated with summer's chilling nature), causing Cold to hide within the Cou Li and skin. In autumn, Wind injury exacerbates the condition. Cold belongs to Yin Qi; Wind belongs to Yang Qi. Injury by Cold first, then by Wind, results in initial chills followed by fever, occurring at regular intervals, named Cold Malaria. Conversely, injury by Wind first, then by Cold, results in initial fever followed by chills, also occurring at regular intervals, named Warm Malaria.
If malaria persists for six or seven days and only fever is observed, it is classified as Warm Malaria.
Regarding Malaria, it originates from Summer-Heat injury in summer. The symptoms manifest as severe chills in autumn, mild chills in winter, aversion to Wind in spring, and profuse sweating in summer, yet its paroxysms occur at fixed times. At the onset of a malaria attack, hair stands on end, yawning and stretching occur, followed by shivering with mandibular clattering, and pain in the lower back and spine. After the chills subside, both interior and exterior become hot, accompanied by headache and thirst requiring drinking. What Qi causes this? It is due to the contention between Yin and Yang above and below, alternating deficiency and excess, and the shifting of Yin and Yang. When Yang merges into Yin, Yin becomes full and Yang becomes deficient. Deficiency of Yang Ming leads to shivering and mandibular clattering; deficiency of Ju Yang (Tai Yang) leads to pain in the waist, back, head, and neck. If all three Yang channels are deficient, Yin Qi prevails; Yin prevalence causes bone cold and pain, with cold generating from within, resulting in coldness both inside and outside. Yang excess causes external heat; Yin deficiency causes internal heat. Internal and external heat together lead to panting and thirst requiring drinking. This results from Summer-Heat injury in summer, where excessive Heat Qi hides between the skin and the intestines/stomach, the residence of Ying Qi (Nutritive Qi). This causes sparse sweating and open Cou Li, allowing Autumn Qi to enter; sweating combined with Wind exposure causes the disease, or bathing allows Water Qi to reside within the skin, coexisting with Wei Qi (Defensive Qi). Wei Qi travels through the Yang channels during the day and the Yin channels at night. This pathogen follows Wei Qi outward to the Yang level to cause heat, and inward to contend with Yin to cause cold. The contention between interior and exterior causes daily paroxysms.
When paroxysms occur every other day, it indicates the pathogen resides deeply, contending internally with Yin. Yang Qi alone erupts, while Yin pathogen adheres internally. Yin and Yang contend but cannot exit, resulting in every-other-day paroxysms.