Severe diarrhea, behavioral problems and even ear infections can be due to a
milk allergy.  Skin testing for food allergies has a high incidence of false
negatives and false positives.  This is probably what the allergist was trying
to explain to you.

It sounds to me like he may still milk-allergic.  The best chances you have of
allowing to outgrow it is to restrict all milk and milk derivatives until
after age three.  Most kids outgrow it by then.

If you haven't joined the Food Allergy Network you may want to visit its
website, www.foodallergy.org

As far as milk substitutes, since he is older now and probably taking a good
deal of his foods via solids, you may want to try rice milk which is available
at the health food stores.  Look for the varieties that are fortified with
calcium, vitamins, and acidophilus.  Rice milks are usually lower in fat than
whole milks or lowfat milks but they make a suitable milk substitute for
drinking and baking.

If your little guy may like waffles or pancakes, look for the original (red)
box of Aunt Jemima's and substitute rice milk or soy formula or soy milk for
the milk ingredients.  You will be surprised at how good they are.

Lynda