04/04/2022
...often shows up in babies after their first formulas or solid foods are introduced. A baby with FPIES may successfully take breastmilk, then develop FPIES symptoms when a cow milk or soy-based infant formula is started. Very rarely, FPIES has occurred in exclusively breastfed babies. FPIES is a non-IgE mediated immune reaction in the gastrointestinal (GI) tract. The immunoglobulin E (IgE) antibodies involved in other food allergy reactions are not involved in an FPIES reaction....