Where Exactly Is the Meridian Problem When Both the Lower Back and Upper Abdomen Itch?

Tracing the Origin: Starting from "Wind Is the Chief of All Diseases"

In ancient Chinese medical texts, itching is mostly attributed to the category of "Wind." The Huangdi Neijing·Suwen·Chapter 42 (Treatise on Wind) states: "Wind is good at moving and is given to frequent changes." These six characters reveal the core mechanism behind the migratory nature of itching. When Wind pathogen invades the exterior of the body and wanders through the meridians, itching sensations appear here and there, rising and falling in turns. Simultaneous itching in both the lower back and upper abdomen precisely matches the characteristic of "good at moving and given to frequent changes"—wherever Wind pathogen resides, itching follows.

From an anatomical perspective, the lower back is situated in the posterior trunk, while the upper abdomen is located in the anterior-superior trunk. Though seemingly far apart, they are secretly connected by the same meridian. This meridian is the "Dai Meridian" (Belt Vessel), which encircles the waist and abdomen like a belt. The Dai Meridian originates from the floating ribs and runs horizontally around the waist, functioning like a sash that binds and restrains all the longitudinally running meridians. Both the lower back and upper abdomen fall within the encircling range of the Dai Meridian. If the qi movement of the Dai Meridian becomes disordered, Wind pathogen may take advantage of the weakness to invade, and itching can manifest in both regions simultaneously.

Why, then, does the same Dai Meridian manifest symptoms specifically at the lower back and upper abdomen rather than elsewhere? This requires a deeper exploration of the interactive relationship between meridian pathways and organ functions. The lower back is the mansion of the Kidneys, while the upper abdomen houses the Spleen and Stomach. Behind this lie complex connections involving the Kidney, Spleen, Stomach, and Liver meridians. To fundamentally understand this symptom, one must not only focus on the skin surface but also discern the dynamics of qi and blood deep within the meridians.

I. Meridian Chronobiology: The Pivotal Role of the Dai Meridian and Rhythms of Qi and Blood

1. Dysfunction of the Dai Meridian: The Meridian Basis for Concurrent Itching in the Lower Back and Abdomen

The Dai Meridian is one of the Eight Extraordinary Meridians that runs transversely. Its function in TCM theory can be summarized in four characters: "restraining and binding all meridians." The Nan Jing·Chapter 29 records: "When the Dai vessel is diseased, the abdomen becomes full, and the lower back feels lax as if sitting in water." Ming dynasty physician Zhang Jiebin further explained in the Leijing (Classified Canon) that the Dai Meridian encircles the waist like a sash; when its qi becomes lax, the qi and blood of all meridians lose their governance. In clinical practice, cases where both the lower back and upper abdomen itch are partly related to disordered qi movement of the Dai Meridian with Wind pathogen wandering along the meridian.

From the perspective of meridian affiliation, the Gallbladder Meridian of Foot-Shaoyang "runs along the interior of the ribs and emerges at the qi street," the Liver Meridian of Foot-Jueyin "reaches the lower abdomen and spreads over the rib flanks," the Spleen Meridian of Foot-Taiyin "enters the abdomen, connects with the Spleen, and links with the Stomach," and the Stomach Meridian of Foot-Yangming "descends flanking the umbilicus and enters the qi street." All four meridians directly communicate with the lower back and abdominal regions. When Wind pathogen combined with Dampness or Heat invades these meridians, itching can wander along the meridian pathways, simultaneously affecting both the lower back and upper abdomen. Interestingly, the qi and blood circulation in these meridians follows specific chronobiological rhythms. The timing patterns of itching attacks can often serve as a reverse indicator of which meridian is "sounding the alarm."

2. Chronobiological Rhythms: When It Itches Points to Which Meridian

According to the TCM theory of midnight-noon ebb-flow (ziwu liuzhu), the circulation of qi and blood through the twelve regular meridians follows a chronobiological rhythm. If itching in both the lower back and upper abdomen intensifies at specific times, it often provides diagnostic clues. The Gallbladder Meridian of Foot-Shaoyang is dominant during the Zi hour (23:00–1:00), the Liver Meridian of Foot-Jueyin during the Chou hour (1:00–3:00), the Spleen Meridian of Foot-Taiyin during the Si hour (9:00–11:00), and the Stomach Meridian of Foot-Yangming during the Chen hour (7:00–9:00).

If itching attacks or intensifies between the Zi and Chou hours at night, it is mostly related to the Liver and Gallbladder. The Liver Meridian "encircles the genitalia and reaches the lower abdomen," and its branch "spreads over the rib flanks"—the upper abdomen is precisely where the Liver Meridian passes. Meanwhile, the lower back is the mansion of the Kidneys, and the Liver and Kidneys share a common origin; when Liver blood is insufficient, Kidney essence loses its nourishment, and the lower back may also itch. If itching intensifies during the Chen or Si hours in the morning, it points more toward the Spleen and Stomach. The Stomach Meridian of Foot-Yangming "originates at the nose, intersects at the bridge of the nose, descends along the outside of the nose, enters the upper teeth, emerges to encircle the lips, descends to intersect at Chengjiang, then runs along the posterior lower jaw, emerges at Daying, follows the jawbone to the front of the ear," and its main branch "descends along the interior of the abdomen"—the upper abdomen is exactly where the Stomach Meridian passes. The Dai Meridian also intersects with Stomach Meridian points on the abdomen. Dampness-Heat in the Spleen and Stomach steaming upward along the meridian can cause upper abdominal itching, while turbid Dampness pouring downward can affect the lower back.

3. Diagnostic Key Points: Weighing the Contributions of Wind, Dampness, Heat, and Deficiency

For itching in both the lower back and upper abdomen, the most common clinical patterns can be classified into three categories.

In cases where Wind pathogen predominates, the itching sensation migrates from place to place, varying in intensity, with no obvious primary skin lesions or only scratch marks. Such individuals often accompany with aversion to wind and dry throat. In cases of accumulated Dampness-Heat, the itching is more persistent, with exudation or flushed skin after scratching, often accompanied by dry mouth, bitter taste, yellowish urine, and sticky stool. In cases of blood deficiency generating Wind, it is more commonly seen in those with chronic illness or the elderly, presenting with dry, scaling skin, worsening itching at night, often accompanied by dizziness, blurred vision, and a pallid complexion.

Clinically, one must first distinguish whether the predominant factor is Wind, Dampness-Heat, or blood deficiency, as the treatment approaches differ accordingly. Wind predominance calls for dispelling Wind; Dampness-Heat accumulation calls for clearing and draining; blood deficiency generating Wind calls for nourishing blood. If one fails to differentiate and applies heat-clearing and dampness-resolving methods at the first sight of itching, it may actually injure the Spleen and Stomach. Conversely, applying blood-nourishing and moisture-moistening agents at the first sign of itching may promote Dampness and generate Heat. The essence of pattern differentiation lies in meticulous precision, never clinging to a single approach.

4. Acupoints and Wellness Directions: A Bridge from Theory to Practice

In meridian theory, the key acupoint on the Dai Meridian is Dai Mai (GB-26), located on the lateral abdomen, directly below the free end of the 11th rib, level with the umbilicus. Jingmen (GB-25) on the Gallbladder Meridian of Foot-Shaoyang is the Front-Mu point of the Kidney, located on the lateral lower back, below the free end of the 12th rib. Tianshu (ST-25) on the Stomach Meridian of Foot-Yangming is located two cun lateral to the umbilicus; it is the Front-Mu point of the Large Intestine and an important pivot for the ascending and descending of qi movement in the abdomen. In TCM theory, these acupoints are all related to the regulation of qi and blood in the lower back and abdomen.

Moxibustion is one of the commonly used external therapies in TCM. For lower back and abdominal itching of a cold-damp or deficiency-cold nature, warm stimulation can warm and unblock the meridians. However, it should be noted that not all itching is suitable for moxibustion. Those with exuberant internal Dampness-Heat who mistakenly use moxibustion may actually exacerbate the fire. In terms of Dao Yin exercises, the movement "Two Hands Hold the Feet to Strengthen the Kidneys and Lower Back" in Baduanjin (Eight Brocade) stretches and extends the lower back and abdominal muscle groups through forward bending and foot-grasping motions, which can help dredge the qi and blood of the Dai Meridian. The specific frequency and duration of practice should be determined by a licensed TCM practitioner based on individual constitution; one should not simply replicate a regimen on their own.

5. Chronobiological Wellness: Aligning Meridian Regulation with Natural Rhythms

TCM health preservation emphasizes "following the seasons," meaning adjusting daily routines according to the waxing and waning of yin and yang over the twelve double-hours. For those whose lower back and upper abdominal itching is related to the Gallbladder and Liver meridians with nighttime attacks, the key is to fall asleep before the Zi hour (23:00–1:00). At the Zi hour, one yang begins to be born; sound sleep at this time supports the generation of Gallbladder qi and the normal circulation of qi and blood in the Gallbladder and Liver meridians. During the Chou hour (1:00–3:00), the Liver Meridian is in command; deep rest during sleep facilitates the storage and repair of Liver blood. If one stays up late or overuses the eyes during this period, Liver blood is covertly consumed, and Wind pathogen more easily arises internally.

For those with morning attacks related to the Spleen and Stomach, the Chen hour (7:00–9:00) is when the Stomach Meridian is in command—an appropriate window for breakfast. During the Si hour (9:00–11:00), the Spleen Meridian is in command; at this time, qi and blood flow to the Spleen Meridian, and the transformative and transport functions are at their peak. Maintaining regular sleep and meal rhythms allows the qi of the Spleen and Stomach to alternate between activity and rest, fundamentally reducing the internal generation of Dampness-Heat. In terms of emotional regulation, the Liver governs free coursing; emotional depression causes Liver qi to stagnate, and prolonged stagnation transforms into Heat and generates Wind. Maintaining emotional equanimity supports the normal free coursing of Liver qi.

II. Same Itching, Different Treatments: Pattern-Based Differentiation of Lower Back and Abdominal Itching from Organ Patterns

1. Dampness-Heat Pouring Downward and Middle-Jiao Dampness-Heat Flowing Downward from the Upper Burner

The Huangdi Neijing·Suwen·Chapter 74 (Treatise on the Essential and Most Important Principles) states: "All pain, itching, and sores belong to the Heart." Although itching manifests on the skin, its root can be traced deeply into the organs. Clinically, upper abdominal itching is mostly related to Dampness-Heat in the middle jiao (Spleen and Stomach), while lower back itching is mostly related to Dampness-Heat in the lower jiao (Kidneys and Bladder). However, when Dampness-Heat pathogens spread diffusely through the triple jiao, itching can appear simultaneously in both the lower back and upper abdomen. Such individuals tend to be overweight, favor rich and fatty foods, and are prone to fatigue and lethargy.

Dampness is a yin pathogen, heavy, turbid, and sticky in nature, tending to attack yin positions; Heat is a yang pathogen, flaming upward and opening and discharging in nature. When Dampness and Heat bind together, it is like oil mixing with flour—difficult to separate. The Stomach governs reception, and the Spleen governs transformation and transport. If dietary indiscretion injures the Spleen and Stomach, water-dampness fails to transform, and prolonged stagnation generates Heat. When Dampness-Heat steams upward along the meridians, upper abdominal itching results; when it pours downward, lower back itching ensues. The tongue coating is typically yellow and greasy, and the pulse is typically slippery and rapid. The focus of care for such cases lies in a light diet, reducing the intake of fried, grilled, sweet, greasy, and raw-cold foods.

2. Blood Deficiency Generating Wind vs. Liver-Kidney Insufficiency: Distinguishing Deficiency from Excess

Itching due to blood deficiency generating Wind is more common in the elderly or those debilitated by chronic illness. The Liver stores blood, the Kidneys store essence, and essence and blood mutually generate each other. When Liver and Kidney essence-blood are insufficient, the skin loses its nourishment—just as a tree lacking water has brittle branches, so skin lacking nourishment becomes dry and generates Wind. This type of itching is often accompanied by dry skin, scaling, prominent scratch marks, and worsens at night. The tongue tends to be pale and thin, and the pulse is typically thin and wiry or thin and weak.

Unlike the lingering itching of Dampness-Heat, blood-deficiency itching belongs to a deficiency pattern. Deficiency is treated with supplementation, focusing on nourishing the Liver and Kidneys, enriching blood, and moistening dryness. In terms of diet, moderate amounts of black sesame, mulberries, goji berries, and other ingredients that nourish the Liver and Kidneys may be consumed, but moderation is essential. Additionally, one should avoid excessive bathing, excessively hot water, and alkaline cleansing products that deplete the skin's sebum—these factors exacerbate skin dryness and worsen itching. Those with blood deficiency often overthink and overtax the Heart and Spleen; when the Heart and Spleen are both deficient, the source of qi and blood generation is insufficient. Therefore, while nourishing blood, attention must also be paid to emotional regulation.

3. Disharmony of Nutritive and Defensive Qi vs. External Invasion of Wind Pathogen: Distinguishing Interior from Exterior Causes

The Huangdi Neijing·Suwen·Chapter 5 (Treatise on the Correspondence of Yin and Yang) states: "A skilled diagnostician examines the complexion and palpates the pulse, first distinguishing yin from yang." Itching in both the lower back and upper abdomen may also fall under the pattern of disharmony between Nutritive (ying) and Defensive (wei) qi, with Wind pathogen taking advantage of weakness to invade. Defensive qi moves outside the vessels, while Nutritive qi moves within; when the two are harmonious, the interstices (couli) are dense and external pathogens find it difficult to invade. If Defensive qi is insufficient, the interstices become loose, Wind pathogen attacks the exterior, and the struggle between orthodox and pathogenic qi at the skin level can manifest as itching. Such individuals often accompany with aversion to wind, spontaneous sweating, and susceptibility to colds.

The upper abdomen is traversed by the Spleen Meridian of Foot-Taiyin and the Stomach Meridian of Foot-Yangming, while the lower back is traversed by the Bladder Meridian of Foot-Taiyang and the Dai Meridian. When Wind pathogen invades, it can lodge in the Spleen-Stomach meridians of the upper jiao or attack the Bladder Meridian of the lower back. In this type of itching, there are often no obvious skin rashes, or only pale red wheals that appear and disappear. The focus of care is on consolidating Defensive qi, avoiding exposure to wind and cold, and promptly drying off after sweating. In daily life, following the precept "avoid deficiency-pathogen thieves winds in a timely manner" is more fundamental than any therapeutic method.

4. Emotional Frustration and Liver Qi Stagnation Transforming into Wind and Fire

There is another scenario where itching in both the lower back and upper abdomen is closely related to emotional fluctuations. The Liver governs free coursing and regulates the movement of qi. If emotional frustration causes Liver qi to stagnate, qi movement becomes impeded, and prolonged stagnation can transform into Fire and generate Wind. Wind and Fire fan each other: ascending along the meridian causes upper abdominal itching; transversely attacking and wandering causes lower back itching. Such individuals often experience significant exacerbation of itching during anxiety, anger, or increased stress, accompanied by distension in both flanks, frequent sighing, and irregular menstruation in women. The tongue may be reddish, and the pulse is typically wiry.

Traditional TCM theory holds that the Liver Meridian spreads over the rib flanks, encircles the genitalia, and reaches the lower abdomen. Liver qi stagnation can not only trigger discomfort along its pathway but also affect the constraining function of the Dai Meridian, causing qi stagnation in the lower back. Regulating emotions is the primary focus of care in such cases. The "Xu" breathing technique from TCM Dao Yin practices, or the "Six-Character Formula" (Liu Zi Jue) breathing exercises, can help soothe Liver qi through breath regulation and may serve as a reference for daily emotional regulation. However, specific practice of these techniques requires professional guidance; one should not attempt to figure them out from written descriptions alone. When illness stems from emotions, medication alone is insufficient—self-adjustment and psychological counseling must go hand in hand.

5. Constitutional Differences and the Clinical Logic of Same Disease, Different Treatments

Clinically, itching in both the lower back and upper abdomen can be seen across multiple constitutions—Dampness-Heat constitution, blood-deficiency constitution, qi-stagnation constitution, and special constitution (allergic diathesis) may all present with this symptom. Even when symptoms are identical, the care directions for different constitutions are diametrically opposed. Those with Dampness-Heat should eat lightly and avoid staying up late; those with blood deficiency should nourish the Liver and Kidneys and rest moderately; those with qi stagnation should regulate emotions and stretch the sinews and bones; those with special constitutions should avoid allergens and consolidate the exterior. This precisely embodies the principle of "same disease, different treatments."

Conversely, different symptoms may originate from the same pathological mechanism. For instance, simultaneous itching in the lower back and upper abdomen may both arise from disordered qi movement of the Dai Meridian—this is the principle of "different diseases, same treatment." On the basis of constitutional differentiation, attention must also be paid to seasonal and environmental factors. In late spring and early summer, Wind pathogen is exuberant; in the long summer (late summer), Dampness qi is dominant; in winter, severe cold easily injures yang qi. The triggers of itching vary by season. Individuals in persistently damp environments or air-conditioned rooms often have lower back and abdominal itching related to cold-damp obstruction; such individuals should avoid excessive use of cold and cooling substances, lest they add frost to snow.

Simultaneous itching in the lower back and upper abdomen may appear to be a simple skin symptom, yet behind it may lie multiple interconnections involving the Dai Meridian, the Liver and Gallbladder meridians, and the Spleen and Stomach meridians. By distinguishing the predominance of Wind, Dampness, Heat, and Deficiency—combined with the timing of attacks, accompanying symptoms, and constitutional characteristics—one can more clearly understand this signal. The clinical thinking of TCM has never been "treat itching by stopping itching." Rather, it seeks to find internal connections amidst complex manifestations, interpreting the language of the body from the holistic perspective of meridians, organs, qi and blood, and yin and yang.

References:

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

2. WHO strategy 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/

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