My ds is 3 and is allergic to egg and intolerent to dairy following a nasty tummy bug last year.
After tea tonight, I noticed that his face was bright red and just put it down to the fact that the kitchen was fairly warm.
Then at bathtime, I noticed that he had a blotchy patch across the front of his chest that went from one side to the other.
We had homemade pizza for tea, and his was made with goats cheese which he has been able to tolerate. He has had pizza many times before with no reaction.
Does this sound like an allergic reaction to you? I gave him piriton just in case and he seems otherwise ok.
I guess you can suddenly become allergic to stuff that was previously ok.