Original sentence: Gua sha (), kerokan or coining, is a form of pseudomedicine in which practitioners use a tool to scrape people's skin to cause tissue damage, in the belief this has medicinal benefit.Gua sha is a pseudomedicine and there is no good evidence that it is of any benefit.Proponents believe that Gua sha releases unhealthy bodily matter from blood stasis within sore, tired, stiff or injured muscle areas to stimulate new oxygenated blood flow to the areas, thus promoting metabolic cell repair, regeneration, healing and recovery.Side effects of gua sha range from minor ones – including dermatitis, burns and hematuria – to rare major ones including cerebral hematoma and severe injuries requiring skin grafts.The injuries from gua skin resemble those from child abuse and families have been prosecuted for using gua sha.The practice is actively harmful, causing tissue damage when used.There is no good evidence it has any medical benefit; instead the procedure is actively harmful
Edited sentence: Gua sha (), kerokan or coining, is a form of traditional medicine in which practitioners use a blunt smooth-edged tool, together with a lubricant, to scrape people's skin to intentionally raise therapeutic petechiae, in the theory this has salutary benefit.In both clinical research, it was generally safe and well tolerated.In clinical findings, clinical research had shown that there are microcirculatory pain-relieving biomechanism associated with Gua Sha, and as well as beneficial short-term effects on pain and functional status in patients with chronic neck pain.It can also be seen in the 1995 Vietnamese movie Cyclo.It is a story about cultural conflicts experienced by a Chinese family in the United States.Proponents posited that Gua sha releases unhealthy bodily matter from blood stasis within sore, tired, stiff or injured muscle areas to stimulate new oxygenated blood flow to the areas, thus promoting metabolic cell repair, regeneration, healing and recovery.The 2001 movie The Gua Sha Treatment () was made in Hong Kong and showed gua sha.This movie is meant to show the differences between Western and Chinese culture