Have you ever noticed that jar of dark, fermented black beans (Douchi) sitting in your kitchen? Unassuming as it may seem, it embodies centuries of fermentation techniques that transform the "rawness" of soybeans into a "warming and moistening" agent. In traditional Chinese medicine (TCM) clinical practice, Douchi is often used to regulate a peculiar state of imbalance where one "can't tolerate cold, nor heat"—individuals who are simultaneously afraid of cold and heat, feeling uncomfortable with both. This often indicates a "stagnant heat" trapped deep within the body, wrapped in an outer layer of cold, much like undercooked black beans sealed in a jar, unable to release heat or let in cold.
1. Coexistence of Cold and Heat Aversion: The Pathogenesis Lies Not on the Surface, but in a "Blocked" Pathway > The Suwen · Treatise on Regulating the Meridians states: "Blood and Qi delight in warmth and abhor cold; cold causes stagnation and impedes flow, while warmth allows dissipation and movement." According to TCM, the body's cold-heat balance relies on the free circulation of "Defensive Qi" (Wei Qi) through the skin and interstices. However, in those who fear both cold and heat, Defensive Qi often gets stuck midway. Common triggers include prolonged stress, late nights, and irregular diet—factors that cause "Liver Qi" stagnation, akin to a blocked exhaust fan in the kitchen. The heat cannot dissipate and becomes trapped in the chest and hypochondrium, while cold pathogens invade directly through the pores. The disease location is not simply exterior cold or interior heat, but lies in the "half-exterior, half-interior" Shaoyang channel. The disease nature is "stagnant heat with cold": the heat is a deficient heat resulting from Qi stagnation, while the cold is an excess cold due to weakened exterior defense. If the condition persists, stagnant heat will consume Yin fluids, and cold will damage Yang Qi, ultimately leading to a state of "dual deficiency of Yin and Yang." Clinically, some individuals who work long hours in air-conditioned environments, accompanied by symptoms like bitter taste in the mouth, dry throat, irritability, and rib-side distension, often exhibit this pattern of "internal stagnant heat with unexpressed exterior Yang."
2. Why Can't We Simply "Warm and Tonify" or "Clear Heat" for Those Who Fear Both Cold and Heat? The most common mistake when dealing with individuals who fear both cold and heat is to "eat ginger when cold, and drink cooling herbal tea when hot." The result? Excessive ginger aggravates the stagnant heat, worsening irritability; excessive cooling tea further damages Yang Qi, intensifying the fear of cold. Why does this happen? Because the pathogenesis is "disharmony between the exterior and interior," not simple cold or heat. If we compare the body to a window, fearing cold is like a drafty window frame, while fearing heat is like a window that won't open—merely plugging the draft (warming and tonifying) makes the window harder to open; merely opening the window (clearing heat) lets the draft in. Clinically, the tongue of such patients often has distinct features: a red tip (stagnant heat), a greasy root (damp turbidity), and tooth marks on the edges (Qi deficiency). The therapeutic approach should focus on "dredging the Shaoyang." Ingredients like Douchi are chosen for their property of "dispersing stagnant heat without damaging the vital Qi"—it doesn't just go to the exterior like mint, nor does it directly attack interior heat like Coptis; instead, it acts like a key, gently unlocking the Qi mechanism trapped in the chest and hypochondrium.
3. When Facing the Dilemma of Cold and Heat, Nurturing Focuses on "Regulating Qi Movement," Not "Matching Symptoms" > Article 96 of the Shanghan Lun states: "Five or six days after contracting cold damage, or in wind strike, there are alternating chills and fever, a feeling of fullness and discomfort in the chest and hypochondrium, a desire to be silent with no appetite, irritability and a tendency to vomit... Xiao Chai Hu Tang (Minor Bupleurum Decoction) is indicated." This classic description closely aligns with the core pathogenesis of those who fear both cold and heat. Zhang Zhongjing's approach was not to tonify Yang or nourish Yin, but to "harmonize and resolve"—using Xiao Chai Hu Tang to soothe the Shaoyang and restore the free flow of Qi. Clinically, some individuals with low spirits or premenstrual breast distension may belong to the "Liver depression and Qi stagnation" pattern; those with insomnia, excessive dreaming, and hot palms may lean towards "stagnant heat damaging Yin." Nurturing methods should vary by constitution: for those with predominant Qi stagnation, Douchi can be appropriately used in a soup with a small amount of scallion white to leverage its acrid-dispersing power; for those with obvious stagnant heat, a few mint leaves can be added to the soup for their light, clear heat-dissipating effect. However, these methods must be determined by a licensed TCM practitioner after pattern differentiation. After all, among those who fear both cold and heat, a small minority may have "true cold with false heat" or "true heat with false cold." Misjudging the direction could worsen the imbalance.
Have you ever considered that this awkward sensation of alternating cold and heat might be more than just a dysfunction of temperature regulation? It could be your body's reminder: some emotions, like fermented black beans, have been stifled halfway in the jar—neither fully released nor adequately transformed. Instead of rushing to find a "warming and tonifying" or "heat-clearing" answer, perhaps you should first ask yourself—lately, has there been a certain Qi, trapped in your chest, hard to articulate and unclear in origin?
Related Q&A
1. What causes the condition of coexisting cold and heat aversion? In TCM, the condition of coexisting cold and heat aversion requires a holistic pattern differentiation approach. Through the four diagnostic methods (inspection, auscultation-olfaction, inquiry, and palpation), combined with the individual's constitutional characteristics, a comprehensive judgment must be made. It cannot be generalized. The specific direction for regulation needs to be determined by a licensed TCM practitioner after an in-person consultation. 2. Why does it not take a long time to improve the condition of cold and heat aversion? The duration of improvement varies from person to person. Acute issues may improve after a few treatments, while chronic constitutional adjustments are recommended to persist for 1-3 months. TCM emphasizes gradual progress and cannot be rushed. The specific cycle should be evaluated by a physician based on the individual's condition. 3. What should be noted in daily care during the dilemma of cold and heat? For daily care, it is recommended to maintain a regular sleep schedule, a balanced diet, moderate exercise, and emotional stability. Specific precautions should be flexibly adjusted according to individual constitution and seasonal changes. You may consult a licensed TCM practitioner for targeted advice.