Eosinophilic esophagitis (EE or EoE) generally occurs as an allergic reaction to food or environmental allergens. It causes the esophagus to become inflamed or narrow due to a build-up of eosinophils ( a type of white blood cell). Eosinophilic esophagitis falls under the category of chronic immune system diseases. Although it can affect anybody, those with other allergic conditions, like hay fever, eczema, and asthma, are more likely to develop it. Common signs in adults Every person with the condition experiences different signs and symptoms. Some common ones among adults include: Dysphagia (difficulty swallowing) As the esophageal tube becomes narrow and inflamed, swallowing can become difficult. This can, in turn, lead to impaction, where food, especially solids, gets stuck in the throat. In rare cases, food stuck in the esophageal tube may require an emergency removal. Chest pain Those with eosinophilic esophagitis also complain of chest pain, generally beginning behind the breastbone. This pain may be associated with other symptoms, such as acid reflux or regurgitation (backflow of undigested food), which are common in another condition called gastroesophageal reflux disease (GERD). If the symptoms do not reduce even after GERD treatment, it may be a sign to get checked for eosinophilic esophagitis.