Indications

Heart pain, palpitations, night sweats, aphonia (loss of voice), and forearm numbness.

Precise Location

In the anterior forearm region, 0.5 cun above the distal palmar wrist crease, at the radial border of the flexor carpi ulnaris tendon. With the palm facing up and the fist clenched tightly, locate the point along the medial edge of the tendon on the little finger side, 0.5 cun above the wrist crease.

Location Method

Sit upright with the palm facing up and the fist clenched tightly. The point is 0.5 cun (approximately half a finger-width) above the wrist crease, at the radial border of the flexor carpi ulnaris tendon – firm pressure produces a distinct sore and distending sensation.

Massage Method

① Massage: Press, knead, or pluck with the thumb. ② Scraping therapy: Scrape from top to bottom. Pressing, kneading, or plucking Yinxi with the thumb treats forearm numbness and palpitations. Therapeutic actions: Calms the spirit and soothes the mind, nourishes yin and stops sweating, unblocks the collaterals and relieves pain.

Compatibility

Coronary heart disease: Combine with Neiguan (PC-6) and Xinshu (BL-15).

Efficacy & Actions

This point belongs to the Hand Shaoyin Heart Meridian and is the Xi-Cleft point of this meridian. It calms the spirit and soothes the mind, nourishes yin and stops sweating, unblocks the collaterals and relieves pain. It is a commonly used point for treating heart-related disorders and night sweats – especially effective for acute heart pain and yin-deficiency night sweats. First documented in Zhenjiu Jiayijing. "Yin" refers to the Hand Shaoyin Meridian; "Xi" means cleft or hollow – the deep convergence of meridian qi. As the Xi-Cleft point of the Heart Meridian, where qi and blood deeply converge – it is named Yinxi (Yin Cleft).