SI-3 Houxi
SI-3 Houxi (後溪) is a point on the Small Intestine meridian. In TCM theory it is described as influencing the channel's qi, and it is traditionally used in the context of the whole pattern rather than as a stand-alone remedy. This page explains how to locate it, what the tradition says about it, and how to press it safely.
Location
At the ulnar end of the distal palmar crease, in the depression proximal to the fifth metacarpophalangeal joint.
How to find it
Make a loose fist. The point is at the end of the crease on the little-finger side, just behind the knuckle.
Traditional functions
- Shu-stream point of the Small Intestine meridian
- Confluent point of the Governing Vessel
- Clears heat and benefits the neck and back
Traditional uses
- Neck stiffness and back tension
- Headache at the back of the head
- Jaw tension
- Hand and wrist discomfort
How to press it
Press firmly for 1–2 minutes while slowly turning the head or rolling the shoulder.
Acupressure is generally a gentle practice. Use the pad of the thumb or finger, start with light pressure, and increase only to a comfortable level. A mild ache or warmth is common; sharp pain is a signal to ease off.
Safety
Avoid strong pressure during pregnancy and over an injured hand.
How this is viewed today
SI-3 is commonly included in trials for neck pain and back pain, often with BL-62. Reviews report short-term benefit with low certainty.
Sources & further reading
- Huangdi Neijing (黃帝內經), c. 2nd century BCE.
- Nanjing (難經), c. 1st–2nd century CE.
- World Health Organization, Standard Acupuncture Nomenclature, 2nd ed., 1991.
- Deadman P, Al-Khafaji M, Baker K. A Manual of Acupuncture. Journal of Chinese Medicine Publications.
- National Center for Complementary and Integrative Health, Acupuncture: What You Need To Know.
Related: Small Intestine meridian · Acupoint library · SI-11 Tianzong · GB-20 Fengchi · BL-23 Shenshu · all twelve meridians