Gua Sha: torture or treatment?
According to Wikipedia, Gua sha involves repeated pressured strokes over lubricated skin with a smooth edge placed against the pre-oiled skin surface, pressed down firmly, and then moved downwards along muscles or meridians.This intervention causes bleeding from capillaries and sub-cutaneous blemishing which usually last for several days. According to a recent article on Gua Sha, it is a traditional healing technique popular in Asia and Asian immigrant communities involving unidirectional scraping and scratching of the skin until 'Sha-blemishes' appear. Gua Sha paractitioners make far-reaching therapeutic claims, e.g." Gua Sha is used whenever a patient has pain whether associated with an acute or chronic disorder... In addition to resolving musculo skeletal pain, Gua Sha is used to treat as well as prevent common cold, flu, bronchitis, asthma, as well as any chronic disorder involving pain, congestion of Qi and Blood". Another source informs us that " Gua Sha is performed to treat