Traditional Chinese Medicine Definition

In traditional Chinese medicine, Bell's Palsy, also known as "Obliquity of the Mouth and Eyes" or "Facial Nerve Palsy," refers to a disorder characterized primarily by the dysfunction of the facial expression muscle groups. Within the field of internal medicine, Bell's Palsy is categorized under "Apoplexy," with the pathogenesis attributed to the vacuity of the meridians, where wind pathogen invades the deficiency, leading to malnourishment of the facial tendons and muscles, resulting in symptoms such as obliquity of the mouth and eyes.

In clinical practice of traditional Chinese medicine, the core pathogenesis of Bell's Palsy is the vacuity of the meridians and the invasion of wind pathogens. Common precipitating factors include deficiency of vital energy, excessive fatigue, and emotional disharmony. During the process of differentiation, attention should be paid to distinguishing the cold, heat, deficiency, and excess:

1. Wind-Cold Invading the Channels: Characterized by sudden obliquity of the mouth and eyes, tightness of the face, aversion to wind and cold, pale tongue with thin white fur, and floating tense pulse.
2. Wind-Heat Invading the Channels: Manifested by obliquity of the mouth and eyes, facial warmth, dry throat, bitter mouth, red tongue with thin yellow fur, and floating rapid pulse.

Overall Treatment Approach: In the clinical treatment of Bell's Palsy, the main focus is on dispelling wind and cold, warming the meridians, and promoting the flow of channels. For those with wind-heat invasion, it is necessary to disperse wind and clear heat, and promote blood circulation and channel unblocking. During the treatment process, it is also essential to flexibly apply methods such as tonifying Qi and blood, and harmonizing Yin and Yang according to the specific condition of the patient.

Common Syndrome Types and Key Points of Differentiation

Invading Wind-Cold affecting the Channels

Main Manifestations: Sudden deviation of the mouth and eyes, tightness of the face, aversion to wind and cold

Management Approach: Expel Wind and Disperse Cold, Warm the Channels and Dredge the Collaterals

Invading Wind-Heat affecting the Channels

Main Manifestations: Drooping of the mouth and eyes, facial flushing, dry throat, bitter mouth

Management Approach: Relieve Wind-Heat, Activate Blood and Dredge Channels

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

In the treatment of Bell's Palsy, it is crucial to pay attention to the local circulation of Qi and blood, and the restoration of facial muscle function.

— Li Mingjiu Traditional Chinese Medicine Practitioner

Reviewed by: Li Mingjiu (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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