IGHE and eosinophilic esophagitis: Regurgitation, vomiting, crying, fussiness, diarrhea and poor appetite have been reported in both LI and non-IgE-mediated CMA, which might also mimic pediatric functional gastrointestinal disorders (FGIDs), gastroesophageal reflux disease (GERD), eosinophilic esophagitis (EoE), anatomic abnormalities or metabolic and neurological diseases.