Gastroscopy was recommended and the diagnosis was confirmed in both proximal and distal esophageal mucosal biopsy.

Eosinophilic esophagitis is an inflammatory disease of the esophagus characterized by the presence of eosinophils in the esophageal wall tissues.

It is an idiopathic disorder (slightly more prevalent in males) and most patients show a previous history of food allergies or intolerance.

Symptoms are usually caused by some specific food exposure (which triggers the activation of eosinophils) and the diagnosis is established by both anatomopathological demonstration of edema and inflammatory cell infiltration with eosinophils and the absence of parasitic infestation or any other cause of eosinophilia.

Symptoms usually respond well to oral steroid therapy, sometimes avoidance of the triggering food is also required.