BACKDOWN: In this study, the authors, each for their own skills, on the basis of clinical, psychological, endoscopic investigations, evaluated the probable relationship between the laryngopharyngeal reflux present in gastroesophageal reflux disease, and the dysfunction of the Eustachian tube. At the end of the study, after a phase of medical therapy for GERD, they found that laryngopharyngeal acid reflux was in fact the basis of audiological symptoms and chronic dysfunction of the Eustachian tube. METHODS: We evaluated with a digestive endoscopy 60 patients with symptoms of gastroesophageal reflux, who had associated pathologies of ENT relevance, probably caused by extraesophageal reflux. Following audiometric evaluations, 40 patients treated with drug therapy for reflux were selected. RESULTS: Based on clinical, psychological, endoscopic investigations, and after medical therapy, acid reflux has been shown to underlie audiological symptoms and chronic dysfunction of the Eustachian tube. CONCLUSION: Although limited to a small number of patients, the results obtained with our study, supported by various clinical studies in the literature, confirm the hypothesis that acid reflux may underlie audiological symptoms and therefore involved in the genesis and chronic dysfunction of Eustachian tube.