Corticosteroid Effect on Achalasia Variant EGJOO

Inclusion Criteria: Adult patients age 18 years or older with the following clinical and diagnostic criteria will be eligible for study inclusion: * EGJOO manometric diagnosis based on CC v4.0 criteria * Primary symptom of dysphagia and/or non-cardiac chest pain * Additional objective evidence of obstruction on Timed Barium Esophagram and/or EndoFLIP * The treating physician has determined that invasive therapy (botulinum toxin injection, pneumatic dilation, POEM, or Heller myotomy) is indicated. Exclusion Criteria: * History of prior foregut surgery * History of esophageal botulinum toxin injection within 6 months of study enrollment * Presence of hiatal hernia \> 2 centimeters * Presence of esophageal mass * Obstructing esophageal stricture or ring on endoscopy * Reflux esophagitis (LA Grades B-D) * Subjects on current immunosuppression or immune modulating therapy * Chronic opioid use * Previously diagnosed extrinsic compression of the gastroesophageal junction * Concomitant Eosinophilic Esophagitis with uncontrolled mucosal disease who have not tried at least one standard therapy * Contraindication to the use of oral corticosteroids * History and/or current diagnosis of Diabetes