Is it the same as a blood clot (thrombosis)?

No. Thrombosis is a medical condition where a blood clot forms inside a blood vessel, whereas Eohyeol is a concept in Korean medicine used to interpret a combination of various symptoms and clinical findings.

What other clues are considered?

We examine whether the pain is fixed in one spot, if it hurts when pressed, and if there are accompanying changes in skin color, bruising, swelling, or menstrual patterns.

Are there any warning signs I should check first?

If one arm or leg suddenly swells, becomes painful, changes color, or if you experience shortness of breath, emergency causes such as thrombosis must be checked first.

What is recorded during the medical evaluation?

Record whether the pain moves or remains fixed in one spot, any bruising or skin color changes, menstrual pain and clots, and the timing of any surgeries or trauma. After distinguishing whether the condition requires blood tests or imaging, the Eohyeol pattern is evaluated.

Eohyeol (blood stasis) is not a medical diagnosis such as thrombosis or vascular occlusion.

In Korean medicine, Eohyeol is a concept that groups clues interpreted as poor blood flow, such as fixed stabbing pain in one area, pain upon pressure, bruising, skin color changes, and menstrual patterns. It is not determined solely by a single bruise or the fact that pain has persisted for a long time.

Commonly confused terms and their differences: Thrombosis is a medical condition where a blood clot forms in a blood vessel and can block blood flow, which is confirmed through tests and imaging. The pattern identification term 'Eohyeol' does not indicate the presence or absence of a blood clot. Swelling, pain, heat in one limb, or sudden shortness of breath must not be explained away as Eohyeol to delay necessary medical tests.
Information to record before your visit: Please mark the location and boundaries of the pain, whether it moves or remains fixed, and the difference between pain when pressed versus when moving. To distinguish risk factors, you must provide photos of bruising, skin color, and swelling, as well as information on menstrual volume, clots, pain, recent surgery, trauma, long-distance travel, hormone medications, and previous history of thrombosis.
Scope of this material: WHO data was used to define the scope of Eohyeol as a traditional medicine term, and MedlinePlus data was used to distinguish symptoms and tests for thrombosis by location. This page is not a criterion for diagnosing Eohyeol or thrombosis, nor for choosing blood thinners or Korean herbal medicine. Sudden shortness of breath, chest pain, coughing up blood, or swelling in one limb requires immediate medical evaluation.

Official References

Medical staff who wrote and reviewed this article

Choi Yeon-seung

Chief Director of Baekrokdam Korean Medicine Clinic

The meaning of Eohyeol, the scope of differential diagnosis, and patient guidance expressions have been reviewed. The last review date was August 25, 2026.

Graduated from Kyung Hee University College of Korean Medicine
Providing Korean medicine treatment since 2010
Symptom treatment from the perspective of heat-cold balance and constitution

Check medical evaluation criteria for my symptoms View full profile

Check the guides where these terms are used

Symptom and Disease GuidePeripheral Neuropathy

Symptom and Disease GuideCold Hands and Feet

Heat and Cold ColumnKorean medicine treatment for cold feet in diabetes: distinguishing between cold sensation and sensory loss

This explains how cold feet in people with diabetes are categorized into actual cold sensation, peripheral nerve sensory changes, or blood flow issues, and describes Korean herbal medicine and acupuncture treatments based on Spleen-Yang deficiency, Kidney-Yang deficiency, or Qi and Blood deficiency.

Heat and Cold ColumnIf the cause of coldness in the knees is not simply due to the cold weather, how should it be understood?

When a cold sensation in the knee area persists, we analyze the cause from the perspective of internal coldness rather than simple external temperature changes and provide a checklist for self-assessment.

Medical GuideWhere should I start checking when sensations of heat and cold recur?

Even if there are no clear abnormalities in tests, recurring sensations of heat and cold are a definite discomfort. By gathering information on the area, time of day, duration, and accompanying changes such as sleep, sweat, and digestion, we can examine the branches of symptoms more precisely from the perspective of heat and cold and determine the direction of Korean medicine treatment.

Medical GuideWhat should I record before a consultation for heat or cold sensations?

Even if the cause was not revealed in tests, you can describe your discomfort in detail. By noting the onset time, location, times when symptoms worsen, and changes in sweating, numbness, dry mouth, or sleep, and by preparing previous test results and medications, we can more accurately examine the patterns of heat and cold and the direction of Korean medicine treatment.

Comparison of similar terms

Korean Medicine ConceptQi and blood

In the context of Qi and Blood, 'Qi' is a Korean medicine term describing the body's functions and activities, while 'Blood' describes the foundation that nourishes and moistens the body. These are not literal expressions for gas or the actual volume of blood.

Korean Medicine ConceptQi stagnation and blood stasis

Gi-che-hyeol-eo (Qi stagnation and blood stasis) is a category in Korean medicine determined by checking if a feeling of tightness changes according to tension, accompanied by fixed pain or color changes in one area. It does not mean that a blood vessel is actually blocked.

Medical TerminologyCold-Heat Pattern Identification

Pattern identification (Byeon-jeung) is the process of examining the location and timing of heat or cold sensations, as well as accompanying patterns such as sleep, digestion, and sweating, through medical interviews and physical examinations. It is not a substitute for medical tests or diagnoses.

Medical TerminologyDifferential Diagnosis

Differential diagnosis is the process of distinguishing possible causes one by one through examination, testing, and monitoring progress, rather than determining a disease name based on a single symptom. This is the first and most necessary step for both sensations of heat and cold.