商陽

Shangyang(LI1, 商阳) is an acupuncture point in the meridian named Yangming Large Intestine Meridian of Hand. Shangyang is the Jing-Well point of the Large Intestine.

Meaning

Shang, one of the Five Sounds, pertaining to metal; yang, Yang of Yin-Yang.
The large intestine pertains to metal and is ascribed to shang Sound. Yang implies the Yang meridian.

Location

On the radial side of the index finger, about 0.1cun posterior to the comer of the nail.

Indication

apoplexy, loss of consciousness, fever, sore throat, numb fingers.

Method

Peck with a three-edeed needle to cause bleeding.