allergy to milk products would not cause a high fever but you can ask for a milk iga -- a blood test to look from milk allergies. many people have lactose intolerance but this is not considered a true allergy.
what can of diagnots test are to find out if your 11 month old baby is allgergic to milk products. my dauther 11 months and she was in the hospital for 6 days with dehydration and high fever and blood in her stool and the doctors sated that all her test was find and today is monday and my dauther is still the same.