GERD is essentially frequent or persistent acid reflux. While occasional reflux is common, GERD is diagnosed when reflux happens twice a week or more or when it causes complications such as esophagitis or difficulty swallowing. MedlinePlus
GERD develops when the LES weakens or relaxes too often. Contributing factors include:
If untreated, GERD can lead to:
Treatment usually involves a combination of lifestyle changes and medication:
Lifestyle changes
Medications
Surgery (for severe or unresponsive cases)