Consensus statements. Consensus statements.
| In the case of suspected food allergy, the differential diagnosis should primarily include infections, chronic inflammatory diseases including eosinophilic gastroenteritis and mastocytosis, carbohydrate malabsorption or functional or somatoform disorders. | Strong consensus |
| For differential diagnosis of suspected food allergy, other diseases should be considered depending on the symptoms and the age of the patient. | Strong consensus |
| If non-IgE-mediated gastrointestinal intolerance reactions are suspected, a gastroenterologist (or pediatric gastroenterologist) should be involved in the diagnostic work-up. | Consensus |