2014-06-21, -  Gerd, sometimes caleld gastro-esophageal reflux disease, or GERD, occurs generated by the coexistence of 2 diseases. The first acid reflux disease contributing condition is a retrograde flow of stomach contents into the esophagus. Notwithstanding, the reflux itself does not automatically give rise to gastro-esophageal reflux disease warning signs or histologic changes, and can happen among in shape human beings as well. In such a case, the process is referred to as “physiologic gastroesophageal refluxâ€.