I have had quite a few phonecalls on fridays from Nursery saying ds has developed a facial rash, the worst last friday when I picked him up. I've been puzzling for weeks, they're so good at avoiding milk and soya for him.
But I fed him sardines tonight (he's been reacting to his calcium supplement) and within minutes he had horrific fish-smelling diarehha up his back and now has a rash. Then I thought, I bet like all the schools I've worked in Friday is fish day for lunch. I'll ring to confirm but it seems a sensible explanation.
Quite depressed to think he may have more than one allergy potentially, but it seems likely.