Gastroesophageal reflux, or GERD (also known as reflux) is where the acid from your stomach escapes through a weakened one way valve near to top of the stomach and travels back through your esophagus causing a burning feeling. Most people relate this to heartburn. Your provider may have ordered certain testing to determine why you are having these issues. Many times surgery may be indicated to fix this problem because there may be a stricture or hiatal hernia. If surgery is warranted, the surgeon will discuss the best treatment option for your condition.