The effect of colds on purpura: 1. Colds can trigger allergic purpura and also cause allergic purpura to recur: Many clinical data have confirmed that infection is the first among the triggering factors of allergic purpura, and the common ones are respiratory infections, gastrointestinal infections, skin infections, and so on. So the prevention of colds is one of the important measures to prevent purpura and the recurrence of purpura. 2, the effect of urine protein, urine occult blood and red blood cells: for an allergic purpura nephritis and nephrotic syndrome children, cold is also a relatively fearful thing, cold can cause purpura nephritis urine protein increase, urine occult blood and urine red blood cells aggravation. It can even trigger the relapse of nephrotic syndrome. This situation is often seen in: purpura nephritis recovery process, that is, the condition is not yet fully controlled; or the original disease of the early treatment is not in place, resulting in urinalysis has been basically restored, but the renal pathology to leave a lesion has not been restored, so the children who have been off the medication for a long time after the cold can appear to a certain degree of recurrence. But parents do not have to worry too much, generally after the cold control for a period of time (at least 1 week or so), most of the urine test can gradually restore the original state. So in the first case, as long as the treatment can continue, and in the second case, as long as the urine test is restored, there is no need for excessive treatment. But in either case, it means that the kidney lesions have not yet fully recovered, so you still need to pay more attention to it. However, if the child’s kidneys have recovered very well, usually, even if the cold urine test will not have too much change. A simple sentence is that, after a normal child has a cold, the urine test usually will not have a problem. In conclusion, colds still have a big impact on kidney disease, so it is very important to exercise properly, improve immunity and reduce colds. If your child has very many colds, you can also consider using Chinese medicine or Chinese medicine plus immunomodulators to deal with them. However, remember that if your child usually has very few colds, you must not overuse immune enhancers and you must not take any medicines.