论虚火沸腾 论厥逆
天师曰∶引治者，病在下而上引之，病在上而下引之也。如人虚火沸腾于咽喉口齿间，用寒凉之药，
入口稍快，少顷又甚，又用寒凉，腹泻肚痛，而上热益炽。欲用热药凉饮，而病患不信，不肯轻治，乃用外
治之法引之而愈。方用附子一个，为末，米醋调成膏药，贴在涌泉穴上。少顷，火气衰，又少顷而热止退，
变成冰凉世界，然后六味地黄丸汤，大剂与之，则火不再沸腾矣。盖此火乃雷火也，见水则愈酷烈。子不
见雷霆之震，浓阴大雨之时，愈加震动，惊天轰地，更作威势，一见太阳当空，则雨歇声消，寂然不闻矣。
又不见冬令之天地耶，严寒霜雪，冰冻郊原，雨雪霏霏，阴风惨厉，此天气下行，而地气反上，盖下热则
上自寒也。又不见夏日之天地乎，酷日炎蒸，蕴隆火热，烁木焚林，燔汤沸水，天气上升，地气下降，此
上热而下寒也。人身虚火，亦犹是也。今既火腾于上，则下体冰冷。今以附子大热之药，涌泉引之者，盖涌
泉虽是水穴，水之中实有火气存焉，火性炎上，而穴中正寒，忽然得火，则水自沸温，水温则火自降，同
气相求，必归于窟宅之中矣。火既归于窟宅，又何至沸腾于天上
哉，此咽喉口齿忽然消亡，有不知其然而然之妙。此引治之巧，又当知之者。
张公曰∶引治尚有一法，汝备志之。如人病厥逆之症，不敢用药以治之者，用吴茱萸一两，为末，
以面半两，用水调成浓糊一般，以布如钟大摊成膏，纸浓半分，贴在涌泉穴内，则手足不逆矣。况上
热下寒之症，皆可用此法而引之。亦引火归元之法也。
华君曰∶亦未传。
陈士铎说：所谓“引治法”，是指病位在下部的，向上引导治疗；病位在上部的，向下引导治疗。比如有人咽喉、口腔和牙齿之间虚火沸腾，使用寒凉药物，刚入口时感觉稍好，但过了一会儿病情加重，再次使用寒凉药，导致腹泻腹痛，而上部的热势更加炽盛。想用热药但让患者凉服，患者却不相信，不肯轻易接受治疗，于是采用外治法进行引导而痊愈。方剂用附子一枚，研成粉末，用米醋调成膏状，贴在涌泉穴上。过了一会儿，火气衰退，又过了一会儿热势停止消退，身体变得冰凉，然后给予大剂量的六味地黄丸汤剂，火气就不再沸腾了。因为这种火是雷火，遇到水会更加猛烈。你没见过雷霆震动吗？在浓云密布、大雨倾盆的时候，雷电反而更加震动，惊天动地，气势更盛；一旦太阳当空，雨水停止，雷声消失，寂静无声。你难道没看过冬天的天地吗？严寒霜雪，郊野冰冻，雨雪纷飞，阴风凄厉，这是天气下行，而地气反升，因为下面热上面自然寒。你难道没看过夏天的天地吗？烈日炎炎，闷热火热，烤焦树木焚烧森林，像烧开的汤沸开的水，这是天气上升，地气下降，所以上面热下面寒。人体的虚火也是如此。现在既然火腾跃于上部，那么下部肢体就会冰冷。现在用附子这味大热的药，通过涌泉穴来引导它，是因为涌泉穴虽然是水穴（肾经井穴），但水中实则有火气存在，火性炎上，而穴位本身正寒，忽然得到火气，水自然会沸腾变温，水温则火气自然下降，同气相求，必定回归到它的本宅之中。火既然回归到本宅，又怎么会再在天上沸腾呢？这就是咽喉口齿间的火忽然消亡，有着不知其所以然而然的奇妙之处。这种引治法的巧妙，应当了解。
张公说：引治法还有一法，你要详细记录。比如有人患厥逆症，不敢用药治疗的，用吴茱萸一两，研成粉末，用面粉半两，用水调成浓糊状，用布摊成钟大小的膏药，纸厚半分，贴在涌泉穴内，那么手足就不会厥逆了。况且上热下寒的症状，都可以用此法来引导。这也是引火归元的方法。
华君说：也没有传授下来。
Chen Shiduo said: The so-called "Guiding Treatment Method" (Yin Zhi Fa) refers to guiding the treatment upward for diseases located in the lower part, and downward for diseases located in the upper part. For instance, if a person suffers from deficiency fire (Xu Huo) boiling up in the throat, mouth, and teeth, using cold-natured medicines may bring slight relief upon ingestion, but shortly after, the condition worsens. Using more cold medicines leads to diarrhea and abdominal pain, while the heat in the upper body becomes even more intense. If one attempts to use hot-natured medicines taken cool, the patient may not believe in this method and refuse easy treatment. Thus, external guiding methods are employed to achieve a cure. The prescription consists of one Fuzi (Aconiti Lateralis Radix Praeparata), ground into powder, mixed with rice vinegar into a paste, and applied to Yongquan (KI 1). Shortly thereafter, the fire energy subsides; soon after, the heat stops and recedes, leaving the body feeling icy cold. Then, a large dose of Liuwei Dihuang Wan Decoction (Six-Ingredient Rehmannia Pill Decoction) is administered, and the fire no longer boils up. This type of fire is akin to thunder-fire; it becomes fiercer when encountering water. Have you not observed the vibration of thunder? During times of dense clouds and heavy rain, the thunder vibrates more intensely, shaking heaven and earth, adding to its momentum. However, once the sun shines brightly, the rain ceases, the sound disappears, and silence prevails. Have you not observed the world in winter? Severe cold, frost, and snow freeze the suburbs; rain and snow fall thickly, and the yin wind is harsh. This is because heavenly qi descends while earthly qi rises; thus, if the lower part is hot, the upper part naturally becomes cold. Have you not observed the world in summer? The scorching sun steams, heat accumulates and burns, scorching trees and forests, like boiling soup and water; this is because heavenly qi ascends while earthly qi descends, resulting in heat above and cold below. Human deficiency fire operates similarly. Now that the fire surges upward, the lower limbs become ice-cold. By using Fuzi, a medicine of great heat, to guide it via Yongquan (KI 1), it is because although Yongquan (KI 1) is a water point (Jing-well point of the Kidney Meridian), there is actually fire energy stored within the water. Fire nature tends to flare upward, while the acupoint itself is cold. Suddenly receiving fire energy causes the water to boil and warm up; as the water warms, the fire naturally descends. Like energies seek each other, and it must return to its original dwelling. Once the fire returns to its dwelling, how can it continue to boil in the heavens? This is the subtle miracle by which the fire in the throat and teeth suddenly vanishes without apparent cause. The ingenuity of this guiding treatment should be understood.
Master Zhang said: There is another method of guiding treatment; record it carefully. For patients suffering from Jue Ni (Reversal Cold/Extremity Inversion) who dare not take internal medication, use Wu Zhu Yu (Evodiae Fructus), one liang, ground into powder, mixed with half a liang of flour, and water to form a thick paste. Spread this onto a cloth shaped like a bell, with a paper thickness of half a fen, and apply it to Yongquan (KI 1). The hands and feet will cease to be inverted/cold. Moreover, symptoms of heat above and cold below can all be treated with this guiding method. This is also the method of guiding fire back to its source (Yin Huo Gui Yuan).
Master Hua said: It was not passed down.