my child isnt dairy allergic , but is allergic to a few other foods.
we never home challenged him, but once he passed a hosptial food challenge(7yrs) to cooked egg we included that in the diet.
we did for a brief spell have a low spt for raw egg, and he passed , just about, a food challenge for that at 10yrs. however, he has been unable to include that in his diet with out some reaction.
also had possible severe reaction to trace of egg, eaten when just recovering from a illness.
we have worked out , though accidents mainly, that it depends on the amount of egg, and what ever amount it is, needs to be highly changed, protein strands, so cooked on high heat. like a cake. which is normal for many egg allergic people, is this the same for those with milk allergies?
my son has out grown other foods, that he can now include in his diet, and we have had other hosptial food challenges to confirm this, and we do feel lucky having this service available to us.
we have never done any home food challenges, mainly due to the severity of his accidental reactions, and developing new allergies.
we have been very lucky to only use the epi pen twice, but have become quite familer with our local a and e departments and local paramedics!
both his epi pen moments took about 1/2hr from start,(which i consider quite slow) but differing , severe symptoms each time.
so for us the very idea of a home food challenge is soooo not worth doing!