What does it mean when the back is red after scraping?

From the perspective of traditional Chinese medicine, the main function of scraping is to promote blood circulation and dissipate evil toxins. Insisting on scraping can improve the body's microcirculation, regulate immunity, and strengthen metabolic functions. With the development of medical technology, the scraping technique can treat many diseases and has become the main clinical technology of traditional Chinese medicine. So what does it mean when the back is red after scraping?

First, what does it mean if the back is red after scraping? The red spots on the back after scraping is a phenomenon of sha. If there is wind-cold, summer-dampness, heat, blood stasis blocking the meridians, etc. in the body, sha can be scraped out. This is because these symptoms may cause local meridian blockage, thereby causing blood stasis, and the sha scraped out is the manifestation of these blood stasis areas. The amount of sha that appears will be affected by many factors. Different causes of disease will result in different amounts of sha. The red spots caused by scraping indicate that toxins in the body are accumulated on the epidermis. This is a relatively mild symptom and patients do not need to worry. The red spots that appear after scraping will disappear on their own and will not have any adverse effects on the body.

Second, Zhang Fengkui, a medical scientist in the Ming Dynasty, believed that evil toxins enter the body through the skin and block the meridians and blood circulation. They must be treated by scraping and bloodletting until the skin is scraped out and condensed into red spots like sand grains. The "sha poison" can then be expelled from the body through sweating. However, some modern Western medical theories believe that the red color left on the skin after scraping is caused by the sha board scraping a large number of capillaries in the skin, resulting in mechanical subcutaneous bleeding, and it is not "poison". However, we feel that the mysteries of our ancestors’ things can only be understood but not explained in words, and cannot be explained by modern medicine.