It is important to note that food-related reactions may not be immediate; some patients may find that the esophagus becomes inflamed by an offending food days or weeks after eating it. Dietary changes can significantly and immediately improve the symptoms of eosinophilic esophagitis. For the pollen induced EoE or seasonal variation of EoE, the two treatment options are addition of swallowed steroids to established diet or the use of immunotherapy.