Eosinophilic esophagitis (EoE) is a chronic disease of the esophagus (the “food pipe” that goes from the mouth to the stomach). It is typically triggered by allergies to certain foods or environmental substances (such as pollen, weeds, or trees), resulting in redness, swelling, and damage to the esophagus. Adults with EoE commonly complain of difficulty swallowing (dysphagia), feeling food move slowly down the food pipe, or food getting stuck in their food pipe (food impaction).