What is GERD? April 16, 2020 18:54 Updated Gastroesophageal reflux disease (GERD) is a more serious and long-lasting form of GER. Related articles How do doctors treat GERD? What are proton pump inhibitors (PPIs)? What are the common GERD symptoms? What is the difference between GER and GERD? "I'm on my placebo pills but I haven’t gotten my period yet. Am I pregnant? "