He also failed his most recent egg challenge as well.
We tried a dairy challenge in April under the supervision of an allergy dietician. While he initially passed a cooked milk, he failed yoghurt dismally. So four months later we are in the process of our next dairy challenge.
Against common advice we are avoiding yoghurt and cheese completely. After much research, I believe the protein chains are inducing an allergic response in Toddler B. So far we have passed milk in baked goodies, and are slowly moving up the chain of a cooked milk custard (de-natured milk as he is allergic to all the additives in formula).
So far so good. I think what has helped the most has been the introduction of a good Probiotic. It has also helped with his environmental allergies. Since introducing the probiotic we have seen a HUGE reduction in his reactions.