National Standard Code
A07.07
GB/T 15657-2021
Category
Syndromes of limb meridian disorders

Traditional Chinese Medicine Definition

Bilateral Sciatica, also known as "Bi Syndrome" in traditional Chinese medicine, falls under the category of "limb meridian diseases." According to the classical text "Internal Medicine of Traditional Chinese Medicine," bilateral sciatica is often attributed to deficiencies in the liver and kidney, malnutrition of the sinews and bones, or invasion by pathogenic cold and dampness, leading to obstructed circulation of Qi and blood, blockage of the meridians, and pain due to obstruction. The primary manifestation is pain along the path of the sciatic nerve, often accompanied by numbness and a feeling of Heaviness in the lower limbs.

In clinical practice of traditional Chinese medicine, the core pathogenesis of bilateral sciatica is attributed to deficiencies in the liver and kidney, malnutrition of the sinews and bones, or invasion by pathogenic cold and dampness, qi stagnation, and blood stasis. Common triggers include prolonged sitting, fatigue, exposure to cold, and traumatic injuries. During diagnosis, it is crucial to differentiate between cold and heat, deficiency and excess. For instance, the Bi Syndrome with cold and dampness obstruction often presents with pain along the path of the sciatic nerve, which worsens in cold conditions; while qi stagnation and blood stasis manifest as sharp, fixed pain that is worse at night and improves during the day, with limitations in flexion and extension. The overall approach to treatment suggests focusing on warming the meridians to dispel cold, removing dampness to unblock the meridians, promoting blood circulation to resolve stasis, regulating qi to alleviate pain, and harmonizing Qi and blood to achieve the goal of pain relief and functional recovery. During the treatment process, it is essential to combine the specific constitution and condition of the patient with flexible application of traditional Chinese medicine treatments such as herbal medicine, acupuncture, and massage.

Common Syndrome Types and Key Points of Differentiation

Cold and Damp Obstruction Syndrome

Main Manifestations: Pain along the path of the sciatic nerve, exacerbated by cold

Management Approach: Warm the Channels, Disperse Cold, Drain Dampness and Dredge Channels

Stagnation and blood stasis

Main Manifestations: Fixed sharp pain, worse at night than during the day, difficulty in flexion and extension

Management Approach: Activate Blood and Dissolve Stasis, Regulate Qi and Alleviate Pain

The above syndrome information is based on traditional Chinese medicine textbooks and clinical standards. Specific differentiation should be completed by a practicing traditional Chinese medicine physician in person.

Physician's Clinical Insights

The pain in patients with bilateral sciatica is often due to invasion by pathogenic cold and dampness, and treatment requires warming the meridians to dispel cold and unblocking the meridians to alleviate pain.

— Chen Yan Traditional Chinese Medicine Practitioner

Reviewed by: Chen Yan (Traditional Chinese Medicine Practitioner) | 2026-07-07 | Version 2

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This page is for the popular science of traditional Chinese medicine knowledge and does not constitute medical advice. Specific diagnosis should be completed by a licensed traditional Chinese medicine practitioner in person.

This article has been reviewed by licensed TCM physicians at Hangzhou Kezhentang TCM Clinic. It is for TCM popular science reference only and does not involve specific treatment plan recommendations.

References: Internal Medicine of TCM (13th Five-Year Plan Textbook), Diagnostic and Therapeutic Effectiveness Standards for TCM Diseases and Syndromes (ZY/T001.1-94), Classification and Codes of TCM Diseases and Syndromes (GB/T 15657-2021)

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