"Gua" means to scrape or rub. "Sha" is the term for the reddish raised skin rash that occurs as a result of the scraping. Sha refers to the blood stagnation in the subcutaneous tissues before and after it is raised as the reddish skin rash (petechiae) or bruising (ecchymosis).

Gua Sha involves lubricating the skin with oil (traditionally a thick oil such as peanut was used) and using a smooth edged instrument, the acupuncturist uses long or short strokes causing redness or bruising. The most common areas for treatment are the yang areas of the body such as the back, neck, shoulders, buttocks, limbs. Occasionally the chest and abdomen are used as well. There are also types of facial Gua Sha that are used in conjunction with cosmetic acupuncture treatments to help increase circulation, elasticity and firmness of the skin.

Gua Sha does however cause temporary ecchymosis (or bruising) which fades in 2-4 days. In TCM theory, the intensity/severity of the bruising is an indication of the severity of the toxicity, stagnation or fever inside the body.

How is Gua Sha Applied?
The area of skin to be treated is applied with oil as a lubricating medium. The acupuncturist then takes the Gua Sha tool and strokes the skin in a downward motion until the petechia form. If there is no blood stasis, stagnation or fever, a rash (petechiae) will not form and the skin will only turn pink.

Gua Sha is stimulating to the immune system, detoxifies, increases circulation, regulates organ function, normalizes metabolic processes, removes stagnation and eases pain. After a Gua Sha treatment, a patient usually feels a shift or release especially if there was pain. There is often sweating which is the body's way of releasing toxins that have been inside the body. Gua Sha revitalizes, rejuvenates, helps diminish stress, fatigue and severe exhaustion. It helps to release emotions, relaxes the body and helps to clear the mind and senses. Gua Sha is a simple treatment, but incredibly effective for many ailments which is why it has been used in China and South East Asia for thousands of years.