[Gastro-oesophageal reflux disease-update 2021].

Gastro-oesophageal reflux disease (GORD), a highly prevalent disease, is defined by troublesome symptoms and/or oesophageal lesions caused by reflux of gastric content. A diagnostic gold standard does not exist. A reliable diagnosis may be difficult in individual cases. Patients' history, endoscopic findings and pH-impedance monitoring contribute to the evaluation of gastro-oesophageal reflux and its consequences. High-resolution manometry may add important information on the pathophysiology of the disease and may help to rule out motility disorders as the leading cause of the symptoms. Proton pump inhibitors (PPI) are the drugs of first choice. In patients with insufficient PPI response, optimization of PPI therapy and/or combination with drugs having another mechanism of action are the available options. If PPIs are not sufficiently effective, not tolerated, or not wished antireflux procedures may be offered in specialized centers taking pathophysiological data into account.