To better understand things related to heartburn and reflux, recognize the following key terms that describe treatment, symptoms, and basic information about the two conditions:
- GERD: Gastroesophageal reflux disease 
- Reflux: Stomach contents that slosh back from the stomach to the esophagus through the LES 
- LES: Lower esophageal sphincter; the “trapdoor” between esophagus and stomach 
- Heartburn: Pain caused by reflux 
- Gastroenterologist: Physician specializing in diseases of the digestive tract 
- Antacid: Medicine that neutralizes stomach acid 
- H2 blocker: Histamine 2 blocker; a class of drugs that slows the production of stomach acid 
- PPI: Proton pump inhibitor; a class of drugs that reduces the production of stomach acid and appears to heal reflux damage to the esophagus 


