Well, we've been to the doctor and before I even mentioned that I was dairy free he suggested the rashes could be due to an allergy, he said the one on the back of the head definately looked allergy related.
Apart from the gravy the only other thing I've had in the last couple of days that I haven't had for ages is eggs. So will cut that out too and see how we go.
nkap - that is strange. Wonder if it is because of the cheese with Lily?