how do you know if it's MSPI or an allergy?

MrsOx

My DS was diagnosed with a "probable milk allergy" a few weeks ago, and when we switched him to soy he had a similar reaction, so now he's on Alimentum and so far, so good. After doing some research though, it seems like this is probably MSPI, but how do you really know if it's MSPI or a true allergy to soy/milk? Only through testing?

luvmagoldn

Only through testing to see if there is a histamine reaction to the protein in a particular food.

magdusia

luvmagoldn:

Only through testing to see if there is a histamine reaction to the protein in a particular food.

ditto pp.

over 50% kids that can't tolerate (or are allergic) to cows milk are also intolerant (or allergic) to soy.  My son is allergic to both.