Just a word of comfort: our tiddler had an awful time with eczema and allergy, being very allergic to dairy, eggs, some nuts and some animals; by the time she started nursery the dairy was no longer a problem, and eggs are ok so long as cooked and not the main ingredient. We went for chinese herbal medicine when things got too appalling and feel it was a huge help. I still carry Piriton syrup (over the counter at the chemist) around in case she has an allergy flare-up but seldom need it these days. She's 4.