[Infant food allergy: digestive manifestations].

Food allergies are frequent in infants where digestive signs predominate. The symptoms are extremely variable and most often non-specific. The signs may be immediate or delayed. The pathology of eosinophilia seems to be frequent and may occur in all parts of the intestine. Diagnosis will be orientated to skin tests, prick and/or patch, measurement of IgE and search for eosinophils in digestive biopsies. Exclusion diet of the suspect food, followed by reintroduction of the food will give certainty to the diagnosis.