What are the benefits of scraping therapy on the back?

Back scraping (Gua Sha) offers benefits such as promoting blood circulation, removing blood stasis, relieving fatigue, and unblocking meridians. It also helps eliminate cold and dampness from the body, improves blood circulation, and facilitates the removal of metabolic waste. However, drawbacks include frequent skin rashes, papules, and skin disorders, which may easily lead to skin infections. Additionally, patients with cerebral thrombosis or myocardial infarction should avoid Gua Sha, as it may cause severe subcutaneous hematomas in these conditions.