Bell's Palsy - Phlegm-Blood Stasis Obstructing the Collaterals Pattern

Dr. Li Wei, DACM

Bell’s Palsy · Phlegm-Blood Stasis Obstructing the Collaterals Pattern

Updated: June 23, 2026

Reviewed by: Dr. Li Wei, DACM

Reading Time: 7 min

Body Area: Head

Pattern Overview

Phlegm-Blood Stasis Obstructing the Collaterals is a chronic pattern in Bell’s palsy, characterized by facial nerve recovery with scar adhesion, epineural fibrosis, aberrant regeneration, synkinesis, and facial muscle contracture. The core pathogenesis is Phlegm and Blood Stasis intermingling in the facial collaterals, leading to epineural fibrosis, scar adhesion, and aberrant nerve regeneration.

Key Symptoms and Differentiation Points

| Differentiation Dimension | Manifestations |

| :— | :— |

| Primary Symptoms | Synkinesis (involuntary movement), facial muscle contracture, slow recovery |

| Associated Symptoms | Sticky mouth, heavy sensation, dark complexion, fixed lesions |

| Tongue and Pulse | Purple-dark tongue with greasy coating, slippery or hesitant pulse |

| Pathogenesis | Phlegm and Blood Stasis intermingling in the facial collaterals |

| Etiology | Prolonged Bell’s palsy, inadequate treatment, chronic inflammation, fibrosis |

Acupuncture Point Prescription

| Point | Location | Function |

| :— | :— | :— |

| Fenglong (ST40) | 8 cun above the lateral malleolus, 2 cun lateral to the tibial crest | Transforms Phlegm and Dampness |

| Hegu (LI4) | Dorsum of the hand, between the 1st and 2nd metacarpals | Regulates Qi and unblocks collaterals |

| Dicang (ST4) | About 0.4 cun lateral to the corner of the mouth | Treats deviation of the mouth |

| Jiache (ST6) | In the depression on the lower border of the zygomatic arch, about 1 cun anterior to the angle of the mandible | Treats facial paralysis |

| Xuehai (SP10) | On the medial thigh, 2 cun above the patella | Invigorates blood and resolves stasis |

| Ashi points | Tender spots on the face | Local blood invigoration and nodule resolution |

Clinical Recommendation: Filament needle, even method; may combine with cupping on the local area to enhance blood stasis resolution.

Herbal Formula

Base Formula: Di Tan Tang (涤痰汤) + Tong Qiao Huo Xue Tang (通窍活血汤)

Composition:

Acorus (Shi Chang Pu), Pinellia (Ban Xia), Tangerine Peel (Chen Pi), Arisaema (Dan Nan Xing), Poria (Fu Ling), Peach Kernel (Tao Ren), Safflower (Hong Hua), Chuanxiong (Chuan Xiong), Red Peony (Chi Shao), Musk (She Xiang), Licorice (Gan Cao)

Action: Transforms Phlegm, invigorates blood, resolves stasis, and unblocks collaterals.

Modifications

| Associated Symptoms | Additions/Subtractions |

| :— | :— |

| Synkinesis | Add Di Long, Quan Xie to unblock collaterals |

| Fibrosis | Add San Leng, E Zhu to break up stasis |

| Scar adhesion | Add Dan Shen, Ji Xue Teng to improve microcirculation |

| Facial muscle contracture | Add Bai Shao, Gan Cao to relax muscles |

Western Mechanism Reference

Facial nerve recovery with scar adhesion, epineural fibrosis, aberrant regeneration, and synkinesis. Phlegm-Blood Stasis Obstructing the Collaterals corresponds to chronic Bell’s palsy with synkinesis, where epineural fibrosis and aberrant regeneration contribute to involuntary movement and facial muscle contracture.

References

  1. Internal Medicine of TCM - Facial Paralysis with Phlegm-Blood Stasis.

  2. Xiong Jibai: Phlegm-Blood Stasis.

  3. WHO. (2023). Neurological health. World Health Organization.

Explore More

  • Find your solution at MendGod.com – Personalized herbal protocols and acupressure tools for facial nerve health.

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