Corrections, first read this, then the under post. On my presumption what follows may well be precisely what you and the child needs as an alternative to any failing current professional Health care.
Milk allergies can seem like milk allergies, and off course possibly the child has milk allergies.
But, that dose not mean to say that the body should go without milk products or associated milk alternatives. It is a guide to find out whether or not the child is actually allergic to milk products or the child's body has only weakened to milk products. Cutting out too much milk, in time, can strengthen the child's body to cope with milk again. Stay away from ice-cream, milk, cheese, cream, yogurt, milk chocolate and associated milk byproducts. Give not too much food at feeding times.