For parents of children with allergic purpura, they often have this confusion, at home the child’s legs and body appeared a lot of red dots, but wait until the time of the hospital visit, the color of the red dots faded, or the number reduced, the visit can not reflect the child’s real condition, because you can not see the child’s rash form, the doctor in the diagnosis can not be accurate conclusions, of course, there will be some impact on the treatment. So I suggest you to remember to take photos, so that when you visit the doctor, you can see not only the situation at that time, but also the shape and quantity of the original purpura. You can also upload to the internet if internet consultation is needed.