Gua Sha (scraping therapy)

About this therapy

Gua Sha, or scraping therapy, is an ancient Traditional Chinese Medicine technique offered in China's TCM hospitals to foreign patients and tourists. A trained practitioner applies oil to the skin and uses a smooth-edged tool, often jade, horn or metal, to scrape along meridians on the back, neck, shoulders and limbs. This brings visible red or purple petechiae called 'sha' to the surface, believed to release blood and qi stagnation, promote circulation, reduce inflammation and expel pathogens. It suits people with muscle tension, neck or back pain, fatigue, headaches, colds or seeking wellness. Many visitors report quick relief from tension despite temporary marks that fade in days. Performed in regulated hospital settings with diagnosis, it offers an accessible introduction to TCM's holistic approach.

How it works

According to TCM, Gua Sha unblocks meridians and promotes qi and blood flow by scraping to release external pathogenic factors and internal stagnation. The sha serves as diagnostic and therapeutic sign of resolved stasis. From a biomedical perspective, it may improve local microcirculation, reduce muscle tension and inflammation, and stimulate immune response through controlled superficial trauma.

What to expect

In a TCM hospital, expect initial TCM diagnosis including pulse and tongue observation. Oil is applied, then unidirectional scraping with a tool on areas like the back, neck and shoulders until sha appears. Session lasts about 20 minutes; sensations include warmth, tingling or mild soreness similar to deep massage. Post-treatment: relaxed feeling, possible mild fatigue; keep warm, hydrate, avoid cold. Sha marks appear immediately, painless, fade in 3-7 days. One session can provide relief; courses often 3-5 sessions spaced 3-7 days apart. Tourists can benefit from short visits of a few days to 1-2 weeks.

Typical programme

About 20 minutes per session; typically 3-5 sessions.

Cautions

• Bleeding disorders, low platelets, or anticoagulant use.
• Broken, infected, ulcerated or diseased skin at the treatment site.
• Pregnancy, especially abdomen, lumbosacral area and certain points.
• Severe cardiovascular or cerebrovascular diseases, organ failure or extreme weakness.
• Acute infections, fever with certain patterns or post-heavy exercise, intoxication or hunger.

Often used for

• Chronic low back painModerate evidence from 2021 meta-analysis of 10 RCTs for pain reduction and improved function; low-moderate quality.
• Neck, shoulder and back painSystematic review of controlled trials found some positive effects but evidence insufficient due to poor methodological quality.
• Perimenopausal syndromePreliminary evidence from 2018 meta-analysis of 6 RCTs for improved KMI scores; most trials low methodological quality.
• Stage I and II hypertension (adjunct)Positive 2024 meta-analysis of 9 RCTs showed BP reduction vs medication alone; needs further validation.
• Knee osteoarthritis2024 systematic review and meta-analysis reported improved scores and reduced pain; low quality evidence per GRADE.
• HeadacheListed in NATCM TCM handbooks as indication; limited dedicated high-quality clinical evidence.
• Fatigue/subhealthCommonly used in TCM hospitals for wellness; evidence primarily from TCM theory and patient reports, limited rigorous trials.
• Stroke sequelaeIncluded in official TCM nursing handbooks; some supportive studies but overall evidence limited and low quality.