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Next, we discuss the treatment of dryness-fire syndromes. The *I Ching* (Book of Changes) states: "Fire follows dryness; nothing dries up things more than fire." Shen Yaofeng said: "Warm-heat syndromes involve both fire and dryness." Xue Shouyin said: "The pathogenic factors of warm-heat diseases all transform from dryness; in their pathology, they manifest mostly as dryness with little dampness." There is heat but no cold, so one only needs to focus on the fluids of the Middle Jiao (Middle Burner), making the clearing and resolving of collateral heat essential. From this perspective, not only do the latent fire syndromes of Wind-Warmth, Summer-Warmth, Latent Summer-Warmth, and Warm-Toxicity easily follow dryness, but even Cold-Warmth and Damp-Warmth, which combine cold and dampness, will eventually transform into fire after prolonged cold stagnation, and into dryness after extreme damp stagnation. These diseases occur in all four seasons, but are particularly severe in late autumn and early winter. The pathogen must lie hidden in the blood collaterals, as stated in the *Neijing* (Inner Canon): "Internally residing in the Ying (Nutritive) level." Generally, when Liver collaterals are stagnant and Ministerial Fire (Xiang Huo) consumes fluids, leading to fluid condensation and dryness transformation, excessive fire manifests in the Shaoyang Gallbladder Meridian, while wind movement manifests in the Jueyin Liver Meridian; when Heart collaterals are stagnant and Sovereign Fire (Jun Huo) scorches Yin, leading to Yin deficiency and dryness transformation, upward steaming manifests in the Taiyin Lung Meridian, and downward scorching manifests in the Shaoyin Kidney Meridian. None fail to affect the Yangming Stomach Fu organ, because the Stomach governs the fluids of the whole body (Zhenhua's note: Western medicine considers the gastrointestinal digestive system as the pathway for the body's fluids). Initially, the pathogen is in the Blood level, and one must distinguish between Excess Fire and Deficiency Dryness. Excess Fire arises from latent pathogens entering the Blood, where Blood stagnation transforms into fire, and fire follows dryness; the disease progression is more urgent and severe than Damp-Fire syndromes, so medication must not be light or casual. If it originates from the Shaoyang Gallbladder Meridian, there must be blazing Ministerial Fire and intense heat in the Ying level, first invading the Stomach Meridian Blood level. The tongue color must be bright red with prickles; or bright red with a stiff root; or purely red with small black spots; or purely red with deep red stars, occasionally with red dots resembling crushed insects; or purely red with sticky coating and cracks, resembling characters like 'Ren', 'Chuan', 'Yao', etc., or cracks like straight grooves. The pulse is wiry, slippery, vigorous, and restless, or large on the right and wiry-rapid on the left. Spirit is often irritable, even drunk-like or manic, chaotic and startled. The complexion must be red like cinnabar, with red filaments visible in the whites of the eyes. Symptoms include high fever and thirst, aversion to heat rather than cold, vertigo and deafness, dry mouth, bitter taste, retching, intense heat in the chest and abdomen that feels burning to the touch, intermittent hot sweats; even rashes and macules may appear, short and frequent dark-red hot urine, and dry constipation. The treatment method should clear and resolve Gallbladder Fire stagnation, save Stomach Fluid dryness, and prevent Liver Meridian wind movement. First use Xi Di Sang Dan Tang (Rhinoceros Horn, Rehmannia, Mulberry Bark, and Moutan Decoction) to clear the Ying level and penetrate collaterals, allowing latent pathogens to resolve via rashes/macules or through battle-sweat; if latent fire remains blazing after rashes/macules and battle-sweat, use Xi Lian Cheng Qi Tang (Rhinoceros Horn, Coptis, Rhubarb, and Mirabilite Decoction) combined with Geng Yi Wan (Changing Clothes Pill) for urgent purgation, allowing latent fire to resolve via stool. There are cases where internal fire-toxin accumulation prevents rashes from appearing clearly after clearing/penetrating methods, but rashes emerge only after purgation. Or if eruption fails to respond, using only fire-clearing and toxin-resolving formulas, such as Xi Ling Bai Hu Tang (Rhinoceros Horn, Antelope Horn, White Tiger Decoction) plus Jin Zhi (Gold Juice), Bai Jing Qiu Yin (White Earthworm), and Gan Luo Gen Jiang (Radish Root Juice), may cause rashes to erupt massively, finally resolving latent fire. After resolution, use Qian Jin Sheng Di Huang Jian (Thousand Gold Raw Rehmannia Decoction) to clear residual fire and restore Stomach fluids. If there is emaciation, shortness of breath, rebellious Qi with desire to vomit, use Zhu Ye Shi Gao Tang (Bamboo Leaf and Gypsum Decoction) plus fresh Zhu Ru (Bamboo Shavings), fresh Mao Gen (Imperata Rhizome), and Qing Zhe Jiang (Green Sugarcane Juice), mixed with a few drops of Ginger Juice, to harmonize Stomach Qi and restore clear fluids.
If it originates from the Jueyin Liver Meridian, there must be blazing Liver Fire and internal wind movement, most damaging Stomach fluids. The tongue color is scorched purple with prickles like a bayberry, or red-purple spots on the sides of the tongue coating, or purple tongue without coating but with spots, or red tongue without coating that is gelatinous and dry, or swollen and semi-gelatinous, or fluidless, dry, sticky, and rough. The pulse is often wiry, tight, forceful, and rapid. Spirit is often dull, confused, or closed, resembling dementia or drunkenness, or coma with silence. Symptoms include deep heat with deep cold extremities, dry throat and tongue, head and face tremors, locked jaw and clenched teeth, leg and foot spasms, occasional convulsions; even testicular ascent, tendon collapse downward, lower abdominal urgency, genital cramping; or intestinal dryness and cramping, feeling like a hard block, painful upon pressure, curled and difficult to extend; Chong and Ren meridians lack nourishment, hardness felt above and below, left and right of the navel, pulsating and shaking the hand; the Xulri acupoint and heart chamber also exhibit abnormal pulsation. Treatment urgently requires saving Blood dryness, extinguishing hyperactive wind-fire, and preventing Yin exhaustion and Yang floating. Urgently use Xi Ling Er Xian Tang (Rhinoceros Horn and Antelope Horn Two Fresh Decoction) or Zi Ye Jiu Fen Tang (Fluid-Nourishing Fire-Saving Decoction), heavily adding Gua Shuang Zi Xue Dan (Melon Frost Purple Snow Pellet), first clearing spirit and extinguishing wind; subsequently use Long Dan Xie Gan Tang (Gentian Liver-Draining Decoction) or Ping Yang Qing Li Tang (Pingyang Interior-Clearing Decoction), salty-bitter-cold descending, to drain fire; finally use E Jiao Ji Zi Huang Tang (Donkey-Hide Gelatin and Egg Yolk Decoction) or San Jia Fu Mai Tang (Three Shells Pulse-Recovering Decoction), nourishing Yin fluids to calm Liver Yang.
Deficiency Dryness arises from latent pathogens injuring Yin, Yin deficiency generating fire, and fire following dryness. The disease progression seems slower but is actually more severe than Excess Fire syndromes; medication must prioritize tonification. If it manifests in the Taiyin Lung Meridian, Sovereign Fire is fanned by internal wind, steaming Lung fluids and consuming Stomach fluids. The tongue must be tender-red and dry, or crimson base with floating white, tongue shape plump and tender, even red coating with white fungal spots. Pulses are often floating-large and powerless on the right, wiry-rapid and powerless on the left, even fine and rigid. Spirit is often fatigued, or conversely irritable. Symptoms include head dizziness, palpitations, dry throat and hoarse voice, wheezing and coughing; or dry cough without phlegm, even if thin phlegm exists, it sticks to the throat and is difficult to expectorate; or phlegm contains red filaments and spots, inability to lie supine during sleep, as supine position causes rebellious Qi and coughing, coughing causes palpitations in the epigastrium, or only able to lie on one side, turning over causes incessant coughing; cool in morning, hot in evening, shortness of breath and weak strength. Treatment should clear Metal to control Wood, protecting Lung and harmonizing Stomach as primary goals, such as Qing Zao Jiu Fei Tang (Clearing Dryness Saving Lung Decoction) plus Yan Zhi Chuan Bei (Rock-processed Fritillaria), Ge Shi Bao He Tang (Ge's Harmonizing Decoction) plus Run Fei Xi Ni Gao (Lung-Moistening Sydney Paste), to moisten dryness and stop cough. If dryness recedes and cough decreases but fever persists, use Qing Hao Bie Jia Jian (Artemisia Annua and Turtle Shell Decoction) combined with Gu Shi Qing Jin San (Gu's Clearing Metal Powder) to retreat latent heat in the Yin level and calm Qi and cough. After major symptoms subside, Gu Shi Bao Yin Jian (Gu's Nourishing Yin Decoction) should be used to conclude treatment.
If it originates from the Shaoyin Kidney Meridian, Sovereign Fire and True Water do not interact; as water diminishes, fire flares. Tongues are often tender-red and dry, or the center of the tongue is black with little coating/dirt, or the tongue root is withered but not very red. Pulses are often large-powerless on the right, wiry-fine-rapid on the left, even sunken-fine-choppy-rapid, or floating-large-leather-rapid. Spirit is often empty irritability, even palpitations, or extreme fatigue. Symptoms include nocturnal emission and seminal leakage, dreams of sexual intercourse with spirits, damp night sweats, symptoms alleviated at dawn and worsened in afternoon, dry mouth and tongue, malar flush and red lips, five-palm heat, sore/cold lower back and feet, even bedridden due to bone weakness, floating Qi with cough, or wheezing and急促 breathing, or dizziness and sore throat; stools are mostly constipated, or conversely loose/slippery; urine is short and frequent, dribbling after urination, or essence leaking with urine. Treatment should nourish Yin and moisten dryness, interacting Heart and Kidney as primary goals, primarily using Zhou Shi Xin Jia Liu Wei Tang (Zhou's New Modified Six-Ingredient Decoction), occasionally using Liu Wei plus Rhinoceros Horn Decoction. To assist Sovereign Fire, add Gou Qi (Goji Berry) and Yuan Shen (Scrophularia); to transmit to Lung Metal, add Sheng Mai San (Generate Pulse Powder); if fire is severe, add Huang Bo (Phellodendron) and Gui Ban (Turtle Plastron), or exclusively use Danxi Da Bu Yin Wan (Danxi Great Tonifying Yin Pill) to nourish Yin and submerge Yang, using bitter-cold to cultivate vital Qi and solidify Yin, superior to Liu Wei Di Huang Tang (Six-Ingredient Rehmannia Pill); if urine is clear and harmonious without phlegm-Qi, only focus on nourishing Kidney, taking Zhang Shi Zuo Gui Yin (Zhang's Left Restoring Decoction) frequently is excellent. Above are the main principles of transmission between Excess and Deficiency in dryness-fire syndromes; other symptoms are detailed in the Warm-Heat sections of this book.
In summary, distinguishing wet-fire and dry-fire treatments is crucial. It is most difficult to regulate when dampness leaves and dryness arrives, or when dryness combines with dampness. Slight imbalance leads either to fluid exhaustion or Qi stagnation. Clinicians must carefully consider this.