Eosinophilic Esophagitis (EoE) is a condition where your esophagus gets inflamed and can narrow over time. This narrowing can lead to a variety of daily symptoms, like painful and difficult swallowing, food getting stuck, and chest pains. EoE causes swelling in your esophagus. The esophagus is in the upper part of the gastrointestinal (GI) tract (gut) and is the tube that moves food from your mouth to your stomach when you swallow. EoE may potentially result from an immune response to food. In some cases, environmental allergens (such as pollen, mold, dust mites, etc.) can also trigger EoE. AAFA.ORG