Gua Sha, is also known as Skin Scraping, it is one of the Traditional Chinese Medicinal therapy.  Based on the TCM theory of dermal parts, people in ancient China started to use Ox horn or jade scraping related skin area in order to dredge the channel and invigorate blood circulation and eliminate stasis.

 

Along with the deep understanding about Gua Sha and evolution of Gua Sha skills,  Gua Sha is becoming more popular and vast used in modern China.   

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Detailed explanation about the skin color changes after Gua Sha therapy implies corresponding etiology, pathogenesis and symptom can be found in Feng Kui Zhang's book " Shang Shu Quan Shu", a Chinese Medicine master in Ming Dynasty. As we learnt that toxicant and negative evil pathogen invade human body through skin, nose and mouth, skin is the first defending door of human body, the longer the pathogen stays in our body the more toxin accumulate, also serious stagnation will form, thereby Qi and Blood obstruction occur. At this point, we use Gua Sha tool to dip Gua Sha oil, scrap affected skin area or related meridian point repeatedly. This positive stimulation on typical area make skin produce congestive  dots, which lead to ameliorate microcirculation, eventually achieve the goals of dispelling evil pathogen, dredging the channel, nourishing ligament and regulating Qi, removing wind cold, clearing heat and dampness, promoting blood circulation and so on.