A U.S. Registry of Eosinophilic Esophagitis Pediatric, Adolescent and Adult Patients Treated With DUPIXENT® As Standard of Care

This observational research study is to better understand patients with eosinophilic esophagitis (EoE) who have recently been prescribed DUPIXENT® (dupilumab). The purpose of this research study is to look at how DUPIXENT is used in normal care of patients with EoE. Possible benefits to others include a better understanding of EoE and helping to inform research and clinical trial design leading to treatment decisions in this patient population going forward. Patient questionnaires will measure the following: * How EoE makes one feel * EoE signs and/or symptoms, eg, how difficult it is to swallow * How EoE affects quality-of-life * How EoE impacts aspects of daily life * How EoE symptoms have changed throughout the study

Key Inclusion Criteria: 1. Initiating treatment with DUPIXENT® for EoE according to the USPI 2. Participants aged ≥12 years and caregivers or legal guardians of participants aged \