Eosinophillic Esophagitis (EoE) is an inflammatory disorder which makes up a set of the eosinophilic gastrointestinal disorders. This condition is characterized by infiltration of the wall of the esophagus with a type of white blood cell, eosinophil. EoE can develop at any age and commonly occurs in individuals with a past history of atopic diseases including allergic rhinitis, food allergy, atopic dermatitis, and asthma. Presenting symptoms in children usually include abdominal pains, vomiting, disinterest in eating, and failure to thrive. Presenting symptoms in adolescents and adults can include heartburn, difficulty swallowing, and most frequently, food impaction. Symptoms of EoE can be similar to those of gastroesophageal reflux but typically with the EoE, aggressive reflux therapy with proton pump inhibitors is usually ineffective in completely controlling symptoms.