What does scraping mean?

Gua Sha is a massage method that involves using porcelain or coins with smooth edges, dipped in vegetable oil or warm water to scrape the neck, shoulder blades, back or intercostals, etc., and repeating the process several times from top to bottom and from the inside to the outside until the skin appears purplish-red in color.
Gua Sha is commonly used in the treatment of colds, sunstroke, nausea, vomiting, dizziness, head swelling, chest tightness, abdominal pain, diarrhea, food stagnation (indigestion of food and stagnation in the stomach), seasickness, seasickness, airsickness, water and soil disorders and so on.
Scraping force should be even, from light to heavy, in order to be able to withstand the degree. Generally scrape until the skin appears flushed, purplish red and other color changes, or the appearance of corn grain, pimple-like spots, or flaky, striated plaques and other morphological changes, and accompanied by local hot feeling or slight pain. For some patients who are not easy to produce gua sha or gua sha less, should not be forced to produce gua sha.
If you need gua sha, it is recommended to go to a professional medical institution.