Introduction. Eosinophilic esophagitis (EoE) represents chronic, a local immune-mediated disease with symptoms of esophageal dysfunction and histologically eosinophil-predominant inflammation and requires immediate endoscopy. Male gender is a strong risk factor. Case report. We presented a case of a 25-year-old young man with a history of allergic rhino-conjunctivitis, asthma, and intermittent severe feeding disturbance. The patient had begun sublingual immunotherapy therapy, containing

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... soluble allergens for ambrosia. Six weeks after starting the ambrosia sublingual immunotherapy he developed burning epigastric pain, dysphagia, and odynophagia. Six days later, he was admitted to an emergency department due to choking on a solid of food. Esophageal histopathological findings were in favor of EoE. Sublingual immunotherapy was discontinued. He feels well now. Conclusion. The majority of cases of Eosinophilic esophagitis are diagnosed in spring or fall, 1-2 months following the peak of pollen season. Dysphagia, chest pain, food sticking, and bolus obstruction are the most common symptoms. Endoscopic findings are Schatzki ring, edema, exudates, furrows, and strictures. Six biopsies should be taken from areas with endoscopic mucosal abnormalities, and infiltration of eosinophils (more than 15 eosinophils/HRI) (HRI - high resolution imaging) is necessary for the diagnosis confirmation. Treatment options are proton pump inhibitors - oral dispersible tablets of budesonide or fluticasone propionate, an elimination diet. Sublingual immunotherapy should be discontinued. Family physicians should be aware of this complication in evaluating patients with dysphagia.