I think Milo might be having an allergic reation to something. but I don't know what it is.

On saturday night we had vegie lasagne, which he has had before, and he cam up with a red blotchy rash on his face, which lasted about 5-10 mins.

Mum has juts rang me now to say the same thing has happened this morning, after breakfast (again, nothing new - he has the same thing every day)

I'm not sure whats going on! Does it sound like an allergy? Can they just start all of a sudden when its something you've never had a problem with before?

The only common things I can tink of is wheat, as he has had dairy in other foods in between and not had the same reaction.