IgE-Mediated Food Sensitization, Management Strategies and Quality of Life in Pediatric Eosinophilic Esophagitis: A Prospective Observational Study

Background: Eosinophilic esophagitis is a chronic immune-mediated disease with increasing prevalence. In pediatric populations, it often coexists with IgE-mediated food sensitization. This dual diagnosis presents unique therapeutic challenges, including on the one hand both temporary and lifelong dietary restrictions and on the other hand therapeutic interventions with a potential impact on quality of life (QoL). Objectives: This study prospectively evaluated the prevalence of IgE-mediated food sensitization and allergy in children with EoE attending a tertiary center in Flanders, Belgium. Additionally, it prospectively documented dietary habits and restrictions in these children, with or without concomitant IgE-mediated food allergies, and assessed the impact of dietary management on quality of life compared to pharmacological treatment. Methods: We consecutively followed 30 children with biopsy-confirmed pediatric EoE (PedEoE) attending a tertiary referral center, for at least 12 months. Patient demographics, allergy testing, dietary history and treatment modalities were recorded. Symptom score and PedEoE QoL was assessed using validated Pediatric Eosinophilic Esophagitis Symptom Score (PEESS 2.0) and Pediatric Quality of Life Inventory (PedsQL 3.0) questionnaires. Statistical analysis was performed using Mann-Whitney U test and Kruskal-Wallis test with Dunn’s test as a post-hoc test. Results: Among 30 children with EoE (60% male, median age 8 years), 60 PedEoE QoL (PedsQL) and 39 symptom (PEESS) questionnaires were collected at one or more time points over a median follow-up of 14.5 months. IgE sensitization to common dietary triggers was observed in multiple patients, with varying clinical reactivity. Symptom scores tended to be higher in children without histological remission, though differences were not statistically significant (median PEESS 23.75 vs. 17.50, p = 0.1934). Grouped by degree of dietary restriction, QoL scores differed significantly (child p = 0.0102; parent p = 0.0203), with better QoL for children and parents when 1 or 2 food products were excluded from the diet in comparison to more excluded food products or treatment by medication only. Conclusions: IgE sensitization is prevalent among pediatric EoE patients and has significant clinical implications for disease management. Treatment choice can influence not only disease control but also the QoL of both patients and their families.