Oesophageal reflux, also commonly known as acid reflux, occurs when the contents of the stomach flow back into the oesophagus. This can cause discomfort, heartburn, and inflammation. There are several synonyms for oesophageal reflux, which vary depending on the severity and specific symptoms of the condition. These synonyms include Gastroesophageal Reflux Disease (GERD), acid regurgitation, heartburn, acid indigestion, and gastro-oesophageal reflux. While there are various treatments available, including lifestyle changes and medication, severe cases may require surgery to prevent long-term damage to the oesophagus. It is essential to take appropriate measures to manage symptoms and seek medical attention if oesophageal reflux persists or worsens.