Purpura is not contagious. Purpura is caused by subcutaneous or submucosal hemorrhage, mostly caused by blood system diseases, the cause should be identified and treated.
Purpura is a purplish-red, 1-5mm diameter rash on the skin, caused by subcutaneous or submucosal hemorrhage, and does not fade when pressed. The mechanism of occurrence is mainly due to abnormalities in the structure and function of the blood vessel wall (vascular purpura), abnormalities in the number and function of platelets (platelet purpura), and abnormalities in coagulation, which are mostly caused by hematologic disorders and are not contagious.
Vascular purpura includes hereditary capillary dilatation, allergic purpura, platelet purpura can be seen in aplastic anemia, acute leukemia, primary immune thrombocytopenia and other diseases, purpura may also be associated with the use of drugs such as penicillin, cephalosporin, salicylic acid drugs such as pau tazone and vaccines.
If you find purpura on the skin, you should go to the hematology department in time to get a clear picture of the cause of the disease and then be treated accordingly.