From the Research
Gua sha is a traditional healing technique that involves scraping the skin with a smooth-edged tool to promote circulation and relieve pain, as supported by the most recent study 1.
Definition and Mechanism
Gua sha is a technique that aims to create petechiae on the skin for a believed therapeutic benefit, with its mechanisms not yet empirically established 1. The practice typically uses a flat tool to apply firm pressure while scraping the skin in long strokes, usually on the back, neck, shoulders, or limbs. This creates temporary redness or light bruising called "sha" which practitioners believe indicates the release of stagnant energy or toxins.
Effects on Microcirculation and Pain
Studies have shown that gua sha increases microcirculation in soft tissues, which may help reduce inflammation and stimulate the body's natural healing processes 2. The technique has been found to cause a significant increase in surface microcirculation, with females showing higher rates of response than males 2. Gua sha has also been shown to have beneficial effects on pain and functional status in patients with chronic neck pain 3 and chronic low back pain 4, 5.
Recommendations and Precautions
Gua sha can be a safe and effective treatment for patients with chronic pain, but it is essential to consult a healthcare provider before trying it, especially for those with bleeding disorders, skin conditions, or taking blood thinners 3, 4. Practitioners typically apply oil to the skin first to allow the tool to glide smoothly, and strokes are generally applied in one direction rather than back and forth. While gua sha may exhibit a more long-lasting anti-inflammatory effect relative to other therapeutic modalities 5, further rigorous studies are needed to confirm and extend these results.