Gastroesophageal reflux disease is the most frequent gastroente-rological diagnosis, with a high prevalence of symptoms impacting patients' quality of life and causing high economic costs. It has a -complex pathophysiology that encompasses different mechanisms and an overlap with functional disorders that cause similar symptoms. Hence, an accurate diagnosis and phenotyping of patients is crucial to individualize therapy and limit health costs. Nowadays, therapy is personalized and encompasses lifestyle interventions, proton pump inhibitors, surgery, neuromodulation, diaphragmatic breathing as well as, in the future, new drugs and endoscopic interventions.