Acid reflux occurs when stomach acid flows back into the esophagus, the tube connecting your mouth to your stomach. While occasional reflux is common, experiencing symptoms twice a week or more may indicate a chronic condition called . Common Symptoms

The primary indicator of acid reflux is , a burning sensation in the chest or throat. Other frequent symptoms include:

Reflux is often caused by the weakening of the lower esophageal sphincter (LES), the valve that normally keeps acid in the stomach. Key triggers include: Heartburn and acid reflux - NHS