Non-interventional Study to Evaluate the Change in Symptoms Scores and Treatment Response After 4 Weeks of Proton-Pump Inhibitors (PPI) Treatment

Inclusion Criteria: * Provision of informed consent * Patients known or newly diagnosed with GERD or patients with typical symptoms of GERD- heartburn, regurgitation (in the last case, GerdQ sum score should be ≥8, in the absence of PPI treatment) Exclusion Criteria: * Any symptoms at visit 1 suggesting a need for further investigation, judged by the Investigator (alarm symptoms).The alarm symptoms suggesting complicated disease are: dysphagia, odynophagia, bleeding, weight loss without intention or anemia. * Previous participation in the present study