Eosinophilic esophagitis is a chronic inflammatory disease. The most typical symptoms are recurrent dysphagia and episodes of food impactions. This pathology is quite frequently associated with atopy. We report the case of a 39-year-old patient, suffering from allergic asthma, admitted to hospital for an episode of food impaction. Clinical, endoscopic and histological findings lead to the diagnosis of eosinophilic esophagitis. From data of the litterature, we discuss the diagnosis, the pathogeny and the treatment of this pathology.