Hello,  My granddaughter is seven yrs. old has a rash in both arm pits and behind the knee.  Heat  brings it on and so does swimming in the lake.  After swimming it was so bad her face swelled up and the itching is horrible.  Please advise.  Thank you
Hi, I had gone through your question and understand your concerns. If I were your treating Doctor for this case of rash, I would come up with two possibilities, these include