SI 3

Acupuncture Point Theory

SI 3 Acupuncture Point Applications and Theory

The acupuncture point "SI 3" , 後谿, is represented by "Hou Xi" in pinyin and "Back Ravine" in english and may be found:

When a loose fist is made, at the ulnar end of the distal palmar crease proximal to the 5th metacarpal phalangeal joint at the junction of the red & white skin.


Of many possible clinical applications, it may be considered to influence the following issues/symptoms:

  • Master Point of the GV, effects entire pathway.
  • Pain in the scapula, arm a/or hand combine with local points.
  • Stiff neck, cervical strain/sprain, pain of the back or neck.
  • Occipital headaches, combine with local points.
  • Night sweats, combine with HT 6.
  • Clears heat and excess from the head, ears and eyes, eye redness, inflammation, visual dizziness, earache, tinnitus, sore throat.
  • Calms the spirit, anxiety, manic depression.  


Si 3 has the following theoretical associations which serve as important guideposts in designing an effective treatment protocol:

Explore si 3 functional groupings theory - Extraordinary Master-Coupled and/or Five Shu, or read all point categories and related theory.

A single acupuncture point is not commonly thought of as an empirical way to influence a TCM diagnostic pattern. SI3, however, is a strong candidate to be incorporated into an acupuncture protocol for patients who exhibit: Heart Blood Stagnation and/or Liver Wind

SI 3 may potentially be used, in coordination with a well designed acupuncture treatment protocol, to influence the following conditions: Arm Pain, Ear Problems, Eye Problems, Headache, Neck Pain, Night Sweats (Sleep Hyperhidrosis), Shoulder Pain, Sore Throat, Tinnitus and/or Whiplash

While not necessarily valid clinically, HT 8 (HT Fire effecting the SI effecting the UB, heat d…) and TH 3 (Ear Problems of any etiology such as excess tinni…) are nearby.

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