陈无择曰暑热喜归心心中之使人噎闷昏不知人入肝则眩晕顽痹入脾则昏睡不觉入肺则喘
满痿
入肾则消渴凡中 死治之切不得用冷唯宜温养得冷则死道途中无汤即以热土熨脐中仍使更
溺概可见矣凡觉中暑急嚼生姜一大块水送下如已迷闷嚼大蒜一大瓣水送下如不能嚼水研灌之
立醒
谨按暑 之证变异不等亦岂止归五脏也冷热当凭脉证用之盖人之形气有虚实所感有轻重
轻则
后时而发至秋成疟痢是也重则实时发者如以上之证至有轻变重重变轻亦自感有浅深传有兼并
尔况人之形志苦乐不一岂得无变异乎大抵四时之证皆然
东垣曰夫脾胃虚弱必上焦之气不足遇夏天热盛损伤元气怠惰嗜卧四肢不收精神不足两脚
痿软
遇早晚寒厥日高之后阳气将旺复热如火乃阴阳气血俱不足也或四肢困倦精神短少懒于动作胸
满气促肢节沉疼或气高而喘身热而烦心下膨痞小便黄而少大便溏而频或利出黄糜或如泔色或
渴或不渴不思饮食自汗体重或汗少者血先病而气不病也其脉中得洪缓若湿气相搏必加之以迟
迟病虽互换少瘥其天暑湿令则一也宜以清燥之剂治之或有所远行劳倦逢大热而渴渴则阳气
内伐
内伐则热舍于肾肾者水脏也今水不能胜火则骨枯髓虚足不任身发为骨痿者主于火热也此湿热
成
痿令人骨乏无力或热厥而阴虚或寒厥而气虚厥者四肢如在火中为热厥四肢寒冷者为寒厥寒厥
则腹中有寒热厥则腹中有热为脾主四肢故也
按此论暑热证候即同冬月伤寒传变为证之不一也彼为寒邪伤形此则暑热伤气若真气元气
虚甚
受病忽有于一时不救者与伤寒阴毒顷刻害人实同故东垣启是病例大开后人之盲 矣学人当审
究其机宜与痿门兼者
陈无择说:暑热之邪容易侵犯心脏,导致心胸噎闷、神志昏迷不省人事;侵入肝脏则出现眩晕、肢体麻木疼痛;侵入脾脏则昏睡不醒;侵入肺脏则气喘、胸满、肢体痿软无力;侵入肾脏则发生消渴病。凡是中暑致死的情况,治疗时绝对不可使用寒凉药物,只适宜用温养之法,若误用冷药就会导致死亡。如果在旅途中没有热水,就用热土熨烫肚脐,或者让患者小便淋在脐部,这些方法都可以见到效果。凡是感觉中暑的人,应立即嚼一大块生姜,用水送服;如果已经昏迷不醒,就嚼一大瓣大蒜,用水送服;如果不能咀嚼,就将水研磨后灌入,患者会立刻苏醒。
谨按:中暑的证候变异不一,难道仅仅局限于归入五脏吗?应当根据脉象和证候来判断是偏寒还是偏热来用药。因为人的形体元气有虚实的不同,所感受的病邪有轻重的差异。轻的病症可能延后发作,到了秋天形成疟疾或痢疾;重的病症则立即发作,像上述那些证候一样。也有轻症转重、重症转轻的情况,这取决于感邪的深浅和传变的兼夹情况。况且人的形体和精神苦乐各不相同,怎么不会有变异呢?大体上四季的疾病都是这样的。
李东垣说:脾胃虚弱的人,必然导致上焦之气不足,遇到夏天天气炎热,就会损伤元气,表现为倦怠嗜卧、四肢不收(松弛无力)、精神不足、两脚痿软无力。如果遇到早晚寒冷,会出现四肢厥冷;等到太阳升高之后,阳气将旺,身体又发热如火,这是阴阳气血都不足的表现。有的人四肢困倦、精神短少、懒于动作、胸中胀满、气促、肢节沉重疼痛;有的人呼吸急促而喘、身体发热而心烦、心下痞满、小便黄而量少、大便溏薄且次数多,或者泻出黄色糜烂样粪便,或者像米泔水一样的颜色;有的人口渴,有的人不渴,不思饮食,自汗、体重,或者汗少(这是因为血先生病而气未生病)。其脉象在中取时得洪缓之脉,如果与湿气相搏结,必定加上迟脉。虽然病情会有互换和轻微好转,但天暑湿令的气候条件是相同的。适宜用清燥的方剂治疗。
如果有长途跋涉、劳累疲倦,逢到大热天气并且口渴,口渴则阳气在内耗伐。内耗伐则热邪留舍于肾。肾是水脏,现在水不能胜火,就会导致骨枯髓虚,足部不能支撑身体,发为骨痿,这主要归属于火热之邪。这是湿热造成痿证,使人骨骼乏力无力。或者是热厥而阴虚,或者是寒厥而气虚。厥证是指四肢像在火中灼烧的是热厥,四肢寒冷的是寒厥。寒厥是因为腹中有寒,热厥是因为腹中有热,这是因为脾主四肢的缘故。
按语:这段论述暑热的证候,就像冬天伤寒传变后证候不一一样。伤寒是寒邪伤害形体,暑热则是暑热伤害气分。如果真气、元气非常虚弱,受病后忽然一时无法救治,这与伤寒阴毒顷刻害人是同样的道理。所以李东垣开启了这个病例,大大启发了后世盲从之人。学习的人应当审慎研究其中的机理和宜忌,并与痿证门类结合来看。
Chen Wuzhe stated: Summer-heat and dryness (Shu-Re) tend to affect the Heart, causing chest oppression, mental confusion, and unconsciousness. If it enters the Liver, it causes dizziness, vertigo, and numbness with pain. If it enters the Spleen, it leads to lethargy and sleepiness without awareness. If it enters the Lung, it results in panting, chest fullness, and flaccidity. If it enters the Kidney, it causes Xiao Ke (Wasting and Thirsting Syndrome). In cases of fatal heatstroke, treatment must absolutely avoid cold medicines; only warm nourishing methods are suitable. Using cold medicine will lead to death. If no hot water is available on the road, one should apply hot earth to the umbilicus or allow urine to be poured over the umbilicus; these methods have proven effective. Whenever one feels heatstroke, immediately chew a large piece of fresh ginger and swallow it with water. If already comatose, chew a large clove of garlic and swallow it with water. If unable to chew, grind it in water and force-feed it; the patient will awaken immediately.
In review: The manifestations of heatstroke vary greatly and are not limited merely to affecting the five Zang organs. One must rely on pulse and symptom patterns to determine whether to use cold or hot treatments. This is because individuals differ in their physical constitution and Qi deficiency/excess, and the pathogenic factors vary in severity. Mild cases may manifest later, developing into malaria or dysentery in autumn. Severe cases manifest immediately, as described above. There are also instances where mild conditions become severe or severe conditions become mild, depending on the depth of infection and the complexity of transmission. Moreover, since people's physical and mental states of suffering and joy are diverse, variations are inevitable. Generally, this applies to diseases in all four seasons.
Li Dongyuan stated: When the Spleen and Stomach are weak, the Qi of the Upper Jiao is inevitably insufficient. During the summer heat, Yuan Qi (Original Qi) is damaged, leading to lassitude, preference for lying down, flaccidity of the four limbs, lack of spirit, and weakness in the legs. Encountering cold in the morning and evening may cause cold extremities (Jue); after sunrise, when Yang Qi rises, the body may feel hot like fire, indicating insufficiency of both Yin-Yang and Qi-Blood. Some present with limb fatigue, shortness of spirit, reluctance to move, chest fullness, rapid breathing, heavy and painful joints. Others exhibit rapid breathing with panting, fever with vexation, epigastric distension and palpitations, yellow and scanty urination, loose and frequent stools, or diarrhea with yellow, mushy discharge resembling rice water. Some are thirsty, others are not; some have loss of appetite, spontaneous sweating, heaviness of the body, or scanty sweating (indicating blood disease preceding Qi disease). The pulse at mid-depth is Hong (Surging) and Huan (Moderate). If combined with Dampness, a Chi (Slow) pulse may appear. Although symptoms may interchange and slightly improve, the climatic condition of summer heat and dampness remains constant. Treatment should employ formulas that clear dryness and heat.
If one travels far, becomes fatigued, encounters intense heat and thirst, the thirst causes internal consumption of Yang Qi. Internal consumption allows heat to lodge in the Kidney. The Kidney is the Water organ; now Water cannot overcome Fire, leading to withered bones and empty marrow, inability of the feet to support the body, resulting in Gu Wei (Bone Flaccidity), which is primarily attributed to Fire-Heat. This is Wei syndrome caused by Damp-Heat, making the bones weak and powerless. It may also present as Re Jue (Heat Jue) due to Yin deficiency, or Han Jue (Cold Jue) due to Qi deficiency. Jue refers to extremities feeling like they are in fire (Re Jue) or being cold (Han Jue). Cold Jue implies cold in the abdomen; Heat Jue implies heat in the abdomen. This is because the Spleen governs the four limbs.
Commentary: This discussion on summer-heat syndromes is similar to how Winter-heat (Shang Han) transforms into various syndromes upon transmission. Shang Han involves Cold Evil damaging the Form, whereas summer-heat damages Qi. If True Qi and Yuan Qi are severely deficient, sudden illness may prove untreatable in time, just as Yin Du (Yin Toxin) in Shang Han can be fatal instantly. Thus, Li Dongyuan opened this case study, enlightening later generations who were previously blind to such mechanisms. Students should carefully investigate its principles and indications, integrating them with the Wei (Flaccidity) category.