Back scraping is generally not harmful, but can play a role in unblocking the meridians, usually skin damage, pregnant women, etc. should not scrape.
Usually the Gua Sha method is based on Chinese medicine meridian skin theory, the use of Gua Sha equipment on the body surface of a part of the scraping, prevention and treatment of disease a method. The mechanism is through the skin of benign stimulation, to achieve dredge meridian, promote blood circulation, regulate the role of organs and organs.
Back scraping is generally not harmful, but patients with skin damage, burns, skin ulcers, acute trauma, trauma sites, new surgical scars, fracture unhealed parts can not be selected for scraping parts, pregnant women should not scrape.
Scraping needs to be carried out under the guidance of a professional doctor, do not long and frequent, so as not to cause adverse consequences.