Also known as acid indigestion, heartburn is the cause of stomach acid reflux into the esophagus through a burning sensation in the throat or chest. Heartburn is a common symptom of gastroesophageal reflux disease (GERD). This refers to a chronic condition in which the lower esophageal sphincter (LES) weakens or relaxes when it separates the stomach from the esophagus, allowing stomach acid to rise back up into the esophagus.

People who often experience heartburn more than twice a week have GERD. Make sure to see a gastroenterologist (a doctor who focuses on the digestive system) if you can already suspect that you have GERD. But before consulting a medical professional, it’s also important to know if you have the following symptoms: