Inclusion Criteria:

• Signed informed consent for study by subject, or parent/guardian if subject is a minor. Assent will be obtained from all minors 11 years of age and older.
• Histological findings on esophageal biopsy to include peak eosinophil density ≥24 per high power field (400x) in the proximal or distal esophagus validated by a pathologist at CCHMC.
• Allergy evaluation including skin-prick testing with multiple food antigens to ensure elimination diet is not indicated.
• Have undergone a minimum 3 months of elimination diet as indicated by skin-prick testing without detectable resolution by repeat endoscopy with biopsies demonstrating persistent EE OR subject/parental refusal to follow elimination diet. If the subject/parent refuses the elimination diet, they are eligible for this study.
• Treatment with a proton-pump inhibitor for at least two months prior to endoscopy OR failure of histological improvement as defined by <1 eosinophil per HPF after 2 month trial of proton pump inhibitor documented by prior endoscopy. The PPI must be used prior to endoscopy to rule out the possibility of GERD.

Exclusion Criteria:

• History of poor tolerance to FP, as defined as multiple episodes of oral candidiasis, hypothalamic-pituitary-adrenal axis suppression as evidenced by signs of Cushing syndrome, headaches, or increased respiratory infections during exposure to Flovent
• Unable to cooperate with use of MDI
• Pregnant females
• Concurrent or recent (within 3 months) use of systemic corticosteroids.
• Unable to swallow medicines (i.e., fed only by gastrostomy tube).
• Comorbid eosinophilic disorders.
• Previously treated with swallowed glucocorticoid for EE within 3 months of the screening visit.