What’s wrong with itchy skin that looks like scrapes after scratching?

The itchy skin after scratching like gua sha may be scratching too much force and other physiological factors, followed by allergic purpura and other diseases caused by.
1. physiological factors: if the skin itchy scratching too much force, may trigger subcutaneous capillary rupture, which may appear after the skin itchy scratching like gua sha situation.
2. Henochromatosis purpura: The pathogenesis of Henochromatosis purpura is not clear yet, and it is considered to be caused by infection, heredity, drugs and other factors. Patients mainly manifested as skin purpura, abdominal pain, joint swelling and other symptoms, some patients in the itchy skin scratching, localization may appear gua sha-like symptoms.
The cause of itchy skin after scratching like scraping is not unique, in the exclusion of physiological factors, it is recommended that patients go to the regular hospital, relevant examinations, to clarify the cause of the disease.