Have you ever experienced this: when you take off your socks at night, you notice a deep ring-shaped indentation around your ankle, and when you press it with your finger, a pit remains on the skin that takes a long time to bounce back? This phenomenon of "ankle edema that leaves a pit when pressed" is known in traditional Chinese medicine as "edema" or "water-qi disease." What signals of the body does it actually hint at? Let us explore this from the perspective of traditional Chinese medicine.
Ankle edema that leaves a pit when pressed — is it a kidney problem?
When many people hear the word "edema," the first thing they think of is the kidneys. Indeed, traditional Chinese medicine holds that the kidney governs water and is responsible for regulating the metabolism of fluids in the body. When kidney qi is insufficient, fluids cannot be properly transformed and vaporized, and easily accumulate in the lower limbs, manifesting as ankle edema that leaves a pit when pressed. But does this necessarily mean kidney disease? Not necessarily. For example, prolonged standing or sitting can also lead to poor local circulation and cause temporary edema. If you frequently experience this symptom, it is advisable to consult a licensed TCM practitioner at a proper medical institution. Licensed TCM practitioners will make a comprehensive assessment through the four diagnostic methods: observation, auscultation and olfaction, inquiry, and palpation.
In the meridian theory of traditional Chinese medicine, there is an acupoint on the Foot Shaoyin Kidney Meridian called "Fuliu," also known as Fubai or Changyang, located on the medial side of the lower leg, 2 cun directly above Taixi, in front of the Achilles tendon. Fuliu is a Jing-River acupoint of the Kidney Meridian. "Fu" carries the meaning of restoration, and "liu" refers to the flow of fluids. This acupoint is closely related to the regulation of fluid metabolism in the body. The Lingshu mentions that the Kidney Meridian "governs the diseases of the kidney," and Fuliu holds important theoretical significance in regulating the movement of fluids.
Why might ankle edema that leaves a pit when pressed be related to the spleen and stomach?
Besides the kidney, the spleen and stomach are also key. There is a saying in traditional Chinese medicine: "The spleen governs transportation and transformation." The spleen is responsible for converting food and fluids into refined essential substances and transporting them throughout the body. If the spleen is deficient, its transportation and transformation capacity declines, and dampness and water retention accumulate in the body, forming edema. Such individuals often also experience poor appetite, loose stools, and a heavy sensation in the body. So how can you determine whether your edema originates from spleen deficiency? You can observe: does the ankle edema that leaves a pit when pressed worsen after meals or after fatigue? If so, try reducing your intake of cold and raw foods and eating more ingredients that strengthen the spleen and drain dampness, such as coix seed, adzuki bean, and Chinese yam. But note that these are only one aspect of daily care and cannot replace professional diagnosis and treatment.
When it comes to the spleen and stomach, Zusanli is an acupoint that cannot be overlooked. Zusanli, also known as Xialing or Sanli, is located on the anterior-lateral side of the lower leg, 3 cun below Dubi, one horizontal finger-breadth from the anterior crest of the tibia. It belongs to the Foot Yangming Stomach Meridian and is the He-Sea acupoint of the Stomach Meridian and the lower He-Sea acupoint of the stomach. According to traditional Chinese medicine theory, "He-Sea acupoints treat the internal organs." Zusanli is closely related to the transportation and transformation function of the stomach and is one of the representative acupoints for regulating the spleen and stomach and promoting the transportation and transformation of dampness and water.
Could ankle edema that leaves a pit when pressed be a signal of a heart problem?
In traditional Chinese medicine, the heart is called the "sovereign official" and governs the blood vessels. If heart qi is insufficient and cannot propel blood to circulate properly, blood will stagnate in the lower limbs, causing edema. This type of edema usually begins at the ankle and gradually spreads upward, and may be accompanied by palpitations, shortness of breath, and fatigue. It is worth noting that if you find ankle edema that leaves a pit when pressed, along with difficulty breathing or an inability to lie flat at night, this may indicate a more serious health concern and requires prompt medical attention. Licensed TCM practitioners in clinical practice will combine tongue and pulse diagnosis to differentiate patterns and provide you with personalized conditioning recommendations. But please remember, the content of this article is for reference only and does not constitute medical advice.
The Yuan-Source acupoint of the Hand Shaoyin Heart Meridian, "Shenmen," also known as Duigu or Ruizhong, is located at the ulnar end of the wrist crease on the palmar side, in the depression on the radial side of the tendon of the ulnar flexor carpi muscle. Shenmen is the Yuan-Source acupoint of the Heart Meridian and is a key gateway for the entry and exit of heart qi. In traditional Chinese medicine theory, it is closely associated with heart-related symptoms such as palpitations and shortness of breath, and is often used as a reference point in clinical pattern differentiation.
How should ankle edema that leaves a pit when pressed be managed in daily life?
If you only experience this occasionally and have no other discomfort, you can try the following methods: 1. Elevate the lower limbs: When resting, use a pillow to prop up your ankles, which helps fluids return. 2. Moderate massage: Gently push and press from the ankle toward the lower leg to promote circulation. 3. Dietary adjustment: Appropriately reduce salt intake, because the salty flavor enters the kidney, and excessive salt will aggravate fluid retention. 4. Avoid prolonged standing or sitting: Get up and move around every hour to promote the flow of qi and blood. These methods can help relieve symptoms but cannot address the root problem. If edema recurs, it is advisable to consult a licensed TCM practitioner for pattern-based treatment according to your constitution.
What situations should be watched for with ankle edema that leaves a pit when pressed?
Although most edema is benign, some situations require attention: for example, sudden swelling of one ankle accompanied by pain or redness, which may suggest local inflammation or a blood clot; or edema accompanied by reduced urine output or frothy urine, which may be related to kidney problems; or edema that gradually worsens and spreads to the thighs or even the abdomen, which may be a signal of internal organ dysfunction. In any of these situations, do not self-medicate or try traditional formulas on your own, to avoid delaying your condition.
Ankle edema that leaves a pit when pressed may seem like a minor matter, but it could conceal a "big secret" of the body. Have you ever had a similar experience? Why not take a look at your ankles and see whether they are reminding you to pay attention to your body's balance?