Dairy challenge

DS had his skin prick test the other day which came back clear for allergies which is good news. However I was expecting it probably would, as he has suspected cows milk protein intolerance rather than milk allergy. He's been dairy free and on neocate since he started solids, we discovered the intolerance through him having formula.

So on Monday after the test, I decided to give him a small piece of cheese to try. He loved it, and he didn't puke which was good, as before if he had any dairy he would puke. So I thought it was a good sign, but then overnight he was up most of the night squirming and arching, lots of gas and seemingly a tummy ache. So Im thinking that dairy is still a no go.

Does that sound about right for a bad reaction? Anyone who has done a challenge of dairy, how did it go? When did you decide to do it again? He never had rashes or skin symptoms, but got gassy, spilly, constipated, tummy aches and bad reflux when he was on cows milk formula.

6 months off, test and see what reaction you get if same then 6 months again or continue giving was the advice we were given.