When my son turned 1, we decided to take the plunge and start to slowly ween to some milk. So we put about 1/7 of Lactaid into his Nutramigen. Everything seemed fine until about 4 days later he started with terrible diarrhea that lasted about 5 days. We stoped the lactaid, and took him to the doc. They said it was a tummy virus.
I was not conviced it was a tummy bug, so I decided to go ahead and take him to an allergist and have him tested for food allergies.
Turns out he IS allergic to milk, apples, banana and oat along with some airborn allergens.
He was not allergic to soy like we thought, so we are in the process of weening to some soy milk and going to see how that goes (keeping fingers crossed).
The moral of the story here is. If you are trying a new food.. especially protein based. The allergist said it takes 3-4 days for it to get into your bloodstream (hence the diarrhea after 4 days of being on the milk).
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