Stomach Pain and Diarrhea from Anxiety: The Problem May Not Be in the Spleen and Stomach

Many people experience stomach pain and diarrhea when anxious, assuming it is purely due to weakness of the spleen and stomach. They drink porridge at every meal and eat Chinese yam daily, only to find that the pain still comes and the diarrhea still goes on. In fact, from the perspective of traditional Chinese medicine (TCM), this is not necessarily a problem of the spleen and stomach acting alone. A more common situation is a breakdown in coordination between the liver, gallbladder, spleen, and stomach. To use an analogy: the spleen and stomach are like a pot of water being heated, while the liver and gallbladder are the hand controlling the fire. If the hand trembles and the flame fluctuates between high and low, the water in the pot will naturally be restless.

The TCM classic Huangdi Neijing (Yellow Emperor's Inner Classic) long ago stated: "Earth gains its free flow through Wood." This means that the transportation and transformation functions of the spleen and stomach — the "Earth" — rely precisely on the dredging and discharging power of the Liver Wood. So you see, anxiety as an emotion does not directly injure the spleen and stomach themselves, but rather cuts off the "supply chain" that enables their normal functioning. Following this thread, although anxiety-induced stomach pain and diarrhea may appear the same, the internal patterns differ greatly among individuals.

1. Liver Wood Overacting on Spleen: A Common Pattern of Abdominal Pain and Urgent Diarrhea Under Stress

In clinical practice, when a patient has anxiety-triggered stomach pain and diarrhea, the first thing to identify is whether "Liver Wood overacting on the Spleen" is the primary pattern. This pattern typically occurs in people under high mental stress or with heavy rumination. When work becomes intense or exams approach, the stomach region becomes distended and painful, the intestines gurgle loudly, and the patient rushes to the toilet. After defecation, the pain eases somewhat. On closer inquiry, such patients often also have a stuffy sensation in the chest and hypochondrium, a tendency to sigh, and symptoms aggravated by emotional fluctuations.

In terms of pathogenesis, liver qi constraint comes first. The liver governs free coursing; when emotions are thwarted, liver qi becomes constrained and stagnant. The constrained liver qi then invades the spleen and stomach transversely. When stomach qi fails to descend harmoniously, pain results; when spleen qi fails to ascend the clear, diarrhea results. The disease location lies among the liver, spleen, and stomach. The nature of the disease is "excess with underlying deficiency" — liver qi is in excess while spleen qi is deficient. The disease trend is "from the liver to the spleen," with a clear direction.

The tongue signs in such patients are often distinctive: red edges, a slightly pointed tip, and a thin white or thin yellow coating. The pulse is commonly wiry (xian), which is the liver pulse — one touch reveals that the liver is "causing trouble." The treatment strategy must address both sides simultaneously: on one hand, course and discharge liver qi; on the other, soothe the spleen and stomach. It is not advisable to indiscriminately supplement with cloying, yin-nourishing products, as this would further obstruct liver qi.

2. Insufficient Zhi and Yi: Spleen-Stomach Yang Deficiency First, Anxiety Only Adds Frost to Snow

Another pattern is exactly the opposite. Such people have always had a weak spleen and stomach. Usually, their stools are loose, appetite is ordinary, they fear cold, and their hands and feet are not warm. They are not necessarily "impatient" or "high-pressure" types, but rather have a delicate mindset, tend to overthink, and suffer from significant emotional internal consumption. When anxious, they feel a cold sensation in the stomach with dull pain. Diarrhea comes neither urgently nor violently, but they feel exhausted all over and are drained after defecation.

From a TCM perspective, this belongs to a foundation of "insufficient Zhi and Yi" (willpower and thought). The spleen governs thought, the kidney governs will. Excessive rumination secretly consumes the qi of the spleen and kidney. Over time, both spleen yang and kidney yang become deficient. The spleen and stomach are like the fire in a stove; the fire is already weak, and when anxiety pours on like cold water, the flame is thoroughly suppressed. The disease location lies in the spleen and kidney. The nature is "deficiency-cold." The disease trend is "kidney qi failing to secure and spleen yang failing to ascend."

Tongue signs in these patients include a pale, puffy tongue body with tooth marks on the edges and a white, slippery coating. The pulse is deep, thin, and forceless — pressing on it feels like pressing cotton. The therapeutic direction focuses on warming and nourishing spleen-kidney yang and securing the lower origin, rather than simply coursing liver qi and regulating qi. Using liver-coursing drugs would instead consume qi — the more you course, the more deficient the patient becomes.

3. The Undercurrent of Liver Blood Insufficiency: Anxiety Diarrhea Accompanied by Dry Mouth and Dry Eyes

There is yet another group with a more striking contrast. They experience stomach pain and diarrhea when anxious, but their symptom list also includes several special records — dry mouth, dry eyes, light sleep, easy palpitations, and in women, notably worse before menstruation. Such people do not have diarrhea very frequently, but the stomach pain is a dull, burning pain — not colicky, not cold pain.

This pattern is clinically common in people whose rumination consumes blood. The liver stores blood, and blood houses the ethereal soul (hun). Chronic anxiety secretly consumes liver blood. When liver blood becomes insufficient, the dredging function loses its material basis — like a wheel lacking lubricant, it turns dry and astringent. When the liver's free coursing power is disturbed, the spleen and stomach suffer as well. But note — the "disturbance" here is not the liver qi being too vigorous and bullying the spleen and stomach, but rather the liver qi being too weak and too rough to propel the spleen and stomach's movement.

Tongue signs: the tongue body is red and thin, with little coating or peeled coating. The pulse is thin and wiry — thin indicates blood deficiency, wiry indicates liver qi disharmony. Treatment focuses on nourishing liver blood, emolliating the liver, and relaxing urgency, while also strengthening the spleen. This is completely different in treatment principle from the first pattern "Liver Wood Overacting on Spleen" — one primarily courses and discharges, the other primarily moistens and nourishes.

4. Why the Same Problem Requires Completely Different Treatments

For the same "stomach pain and diarrhea when anxious," the keys of the three patterns correspond to three different locks: Liver Wood overacting on Spleen requires coursing; insufficient Zhi and Yi requires warming; liver blood insufficiency requires nourishing. This brings out an extremely important aspect of TCM pattern differentiation — the same disease treated with different methods.

On the surface, all three patterns share the three items of anxiety, stomach pain, and diarrhea. But the underlying pathogenic mechanisms are vastly different. Anxiety acts on different links in different people: in some, anxiety injures liver qi, and the liver qi runs transversely and attacks the spleen; in others, anxiety consumes yang qi, and the fire of spleen and kidney gradually dwindles; in still others, anxiety scorches liver blood, and the source of moistening gradually dries up. As the Huangdi Neijing · Suwen · Yinyang Yingxiang Da Lun, Chapter 5 states: "In treating disease, one must seek the root." This "root" is the constitutional bias and the pivotal pathogenic mechanism hidden behind different symptoms.

If one discards the differences in pattern differentiation and uniformly uses a single formula to deal with all "anxiety-type diarrhea," the result would likely be counterproductive. Liver-coursing drugs used in people with liver blood deficiency will make the blood even scarcer the more they are used; warming and tonifying drugs used in people with liver qi constraint will worsen the constraint the more they warm. The ingenuity of TCM has never been in "stopping diarrhea when seeing diarrhea," but in seeing clearly from which fork in the road the diarrhea has come.

5. Giving Each of the Three Constitutions a Hand in Daily Life Rhythms

In terms of diet, people with the Liver Wood overacting on Spleen pattern should choose light, easily digestible foods and avoid deep-fried, spicy, and pungent items that may fuel liver fire. Those with the deficiency-cold constitution of insufficient Zhi and Yi should avoid raw cold fruits, vegetables, and cold tossed salads; hot porridge and warm soups are more suitable. People with liver blood insufficiency may pay more attention to dark-colored foods, but need not deliberately overdo it. The key is regular meals and thorough chewing.

Sleep and daily rhythms are the cornerstone for all three constitutions. Nighttime sleep is the golden period when liver blood returns to storage and liver qi becomes free and harmonious. Staying up late is equivalent to removing firewood from under the cauldron. Especially for those with liver blood insufficiency, falling asleep before the Zi hour (11 p.m.–1 a.m.) benefits the body far more than any food therapy. Those with spleen-kidney yang deficiency should also pay attention to keeping the abdomen warm. Protecting the "yang strongholds" such as the back of the neck, lower back, and abdomen provides a basic guarantee for the transport and transformation environment of the spleen and stomach.

Regarding emotional regulation, anxiety itself is not entirely an enemy; it is also a signal from the body. People with Liver Wood overacting on Spleen are suited to expressing their emotions — writing, talking to someone — giving the constrained qi an outlet. Those with insufficient Zhi and Yi should instead "think less and do more," not letting rumination circle repeatedly in the mind. Those with liver blood insufficiency may listen to soothing melodies or take walks by the water to soften the mood. When anxiety comes, try to focus attention on the inhalation and exhalation of the breath — observe the diaphragm descending on inhalation and the shoulders and neck relaxing on exhalation. This can help relieve tension.

Traditional daoyin exercises such as Baduanjin (Eight Pieces of Brocade) and Taijiquan can be helpful for improving emotions and visceral states. However, how specifically to practice them based on individual constitution requires a licensed TCM practitioner to determine a plan according to the specific constitution. The same applies to acupoint press and moxibustion. The locations of acupoints can be learned (such as Zusanli, Taichong, Zhongwan, etc.), but the technique, duration, and frequency vary from person to person and should not be blindly copied.

6. The Repeated Tug-of-War Between Anxiety and the Gut: The Body Is Sending Encrypted Messages

The modern medical mechanisms corresponding to anxiety have a certain implicit resonance with the TCM theories of "the liver houses the ethereal soul" and "the spleen governs thought." Anxiety is transmitted through neural and endocrine pathways to the gastrointestinal tract — this language was translated long ago in TCM as "Liver Wood restrains Spleen Earth."

Interestingly, many people with recurrent stomach pain and diarrhea are caught in a cycle: anxiety triggers diarrhea, diarrhea aggravates anxiety, and physical discomfort in turn clutches at the mind and spirit. In this cycle, the intestine becomes increasingly sensitive, and the anxiety threshold grows lower and lower. If one only focuses on stopping the diarrhea, the cycle will still surface through other outlets — such as the skin, sleep, or even throat discomfort.

So perhaps it is better to understand it from another angle: anxiety-triggered stomach pain and diarrhea is the viscera reporting to you the progress bar of "coordination imbalance." It is not an error to be erased, but a special body language. You do not need to forcibly "muffle" it with various methods, but rather understand what it is trying to tell you — is the liver too tight? Is the spleen too cold? Or is the blood too dry?

Those who understand this code will have a much friendlier relationship with their bodies. The next time the stomach begins to churn and the intestines start to gurgle, take a moment to feel: does the discomfort come from the tight ribcage, or does it rise from the cold lower abdomen? At that moment, you have already stepped onto the starting point of pattern differentiation.

References:

1. The original text of Huangdi Neijing · Suwen can be consulted in the TCM classical literature database: https://tcmdata.cintcm.com/

2. World Health Organization strategic document on traditional medicine: https://www.who.int/health-topics/traditional-complementary-and-integrative-medicine

3. Official website of the National Administration of Traditional Chinese Medicine: https://www.satcm.gov.cn/

Many people experience stomach pain and diarrhea when anxious, assuming it is entirely due to spleen and stomach weakness. In fact, three distinctly different patterns exist: Liver Wood overacting on Spleen, spleen-kidney yang deficiency, and liver blood insufficiency. Some need coursing, some need warming, and some need moistening — the directions are completely different. Starting from the classic saying "Earth gains its free flow through Wood," this article helps you identify which category you belong to and understand the body's signals behind the tug-of-war between anxiety and the gut.

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