Gua Sha is abrading the skin with pieces of smooth jade, animal horn or smooth stones, to promote the circulation. It is believed this scraping or rubbing treatment is for almost any ailment and healthcare. The area can be covered by red spots, even bruising.
The spots and bruising take 3-10 days to heal and there is often some soreness in the area that has been treated. The benefits of gua sha far outweigh any mild discomfort caused by the treatment.