PC-4 Ximen
PC-4 Ximen (郄門) is a point on the Pericardium 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
Five cun above the wrist crease, between the tendons of palmaris longus and flexor carpi radialis.
How to find it
Lay the palm face up. From the wrist crease, measure about two hand-widths up the forearm, between the two central tendons.
Traditional functions
- Xi-cleft point of the Pericardium meridian
- Invigorates the blood
- Opens the chest
Traditional uses
- Chest tightness
- Palpitations in traditional practice
- Forearm and elbow tension
- Emotional constriction
How to press it
Press gently for 1 minute. Breathe slowly and avoid pressing on the tendons.
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
Chest pain, breathlessness, or palpitations need medical evaluation.
How this is viewed today
PC-4 is used in small trials for chest and cardiac-related symptoms. Evidence is limited.
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: Pericardium meridian · Acupoint library · PC-6 Neiguan · PC-5 Jianshi · HT-7 Shenmen · all twelve meridians