When the skin is scratched and blood spots appear locally, much like scraping, it is necessary to first consider whether the bleeding is due to skin damage caused by excessively sharp nails. If there is no skin damage, then you need to pay attention to the clinical generally consider that it may be due to the body suffering from bleeding disease. It is suggested that when this situation occurs, promptly go to the hospital for examination and clear diagnosis: 1. Simple purpura: It is a common and unexplained benign bleeding disease with bleeding spots or petechiae on the skin but no other abnormalities, bleeding may be more obvious after scratching, thus appearing as many blood spots as scraping, mostly in both lower limbs. Other than bleeding, there is no other discomfort, and it may subside on its own and is prone to recurrence. This disease does not require special treatment, can be taken by taking vitamin C and other drugs to improve the permeability of the blood vessel wall, so as to relieve; 2, hereditary bleeding capillary dilation: due to small arteries, small veins and capillary wall thinning, the lack of connective tissue around the support, resulting in local vasodilatation, brittle changes, etc., it is easy to appear skin a scratch will appear blood spots like Gua Sha situation, common in the face, lips, the Fingers and other locations, local lesions may appear bright red or purplish-red small dilated blood vessels. It is a genetic lifelong disease, there is no cure, to symptomatic treatment, namely to prevent trauma, avoid scratching, bleeding can be local pressure to stop bleeding, bleeding more can also use drugs to stop bleeding, such as posterior pituitary gland, adrenochrome tablets, etc., there is serious bleeding can actively correct anemia; 3, allergic purpura: also known as hemorrhagic capillary poisoning, belongs to the vascular metaplasia disease. Patients due to capillary fragility or increased permeability, prone to skin a scratch local will appear blood spots, thus like scraping a lot of blood spots. Patients may experience general malaise such as low-grade fever and malaise, and may also involve the digestive tract, leading to nausea and vomiting, abdominal pain and diarrhea. Clinical treatment requires active removal of the cause, control of infection, and avoidance of exposure to allergens. Antihistamines, such as diphenhydramine and promethazine, and adrenocorticosteroids, such as prednisone and hydrocortisone, are often used to reduce capillary permeability, and immunosuppressive agents, such as azathioprine and cyclosporine, may be used in combination. In addition, idiopathic thrombocytopenic purpura, hemophilia, acquired coagulation abnormalities, leukemia, as well as urticaria patients can also appear the skin a scratch local blood spots very like scraping the situation. And long-term use of aspirin, anticoagulant drugs, anti-hypertensive drugs, can also cause changes in coagulation function, appearing a scratch there will be blood spots, like Gua Sha. If it is caused by a disease, it is recommended to actively seek medical advice to identify and parallel targeted treatment by a doctor. If it is caused by medication, it is recommended to communicate with the doctor in a timely manner and follow medical advice to stop or change the medication.