Hi, C., My son also had a rash and itchy eyes from about 3 months to 4-6 years of age. We tried everything At four, the dr ran allergy tests because I had taken him off anything that bothered him at all. No paper diapers, milk, etc. (does your daughter have loose stool?) Anyway, my son was allergic to everything, wheat, peanut butter, chocolate, milk, all products associated with these things, grass, trees, flowers, dust, molds mildews, you name it, he was allergic to it. Spring and Fall were a nightmare. He also ended up with asthma, and all the misery associated with allergies. So. The best thing is to find out what the allergies are and then try to avoid as many as possible. There are allergy shots and it sounds like she is just one of those lucky allergic children. Benedryl is good but it tends to make them sleepy or hyper depending on the child. I would definitely talk to my physician. But if he just blows it off, go to another Dr. It took four long miserable years for my dr. to check out allergies in my son.