Gastro-oesophageal reflux is a common disease in childhood, indicating either a variation from normal in the first months of life or a genuine disease in older infants or children. Digestive symptoms dominate in the young infant whereas respiratory ones should not be overlooked when the child grows. Diagnosis relies on history and clinical examination. (Esophageal pH-metry and/or upper endoscopy may be required. Most of the time, medical management appears sufficient.