SI-3 (Hòuxī, 后溪) — Back Stream

Anatomical location

On the ulnar dorsum of the hand, in the depression proximal to the fifth metacarpophalangeal joint at the border of the palmar and dorsal skin.

Traditional actions

Benefits the spine and neck; clears heat; calms the spirit; opens the Governing vessel.

Recorded indications

Primary: Neck stiffness; upper back pain; headache; fever; finger or hand pain.

Secondary: Night sweating; agitation; ringing in the ears.

How to read this reference

AcuAtlas separates anatomical location, traditional classification, recorded actions, indications, insertion-depth references, and moxibustion notes because these fields answer different study questions. The location statement is the orientation anchor. The classification and actions describe traditional reference categories, while indications summarize how checked educational sources associate the point with established teaching material. They are not a recommendation to select or stimulate the point.

Depth and moxibustion entries are reproduced as bounded reference notes rather than procedural instructions. Individual anatomy, technique, angle, clinical setting, and local professional standards can change what is appropriate. Review the cited documents and supervised training material before using any technical field. The normalized map coordinate is included only to place the point on the matching AcuAtlas body plate; it is not a substitute for palpation or anatomical assessment.