What causes gerd and acid reflux in infants and children? acid reflux happens when food and acid in the stomach move back up into the tube that goes to the mouth, called the esophagus sometimes. Acid reflux pediatric. What causes acid reflux or gerd in infants and children? the lower esophageal sphincter is a valve mechanism that includes a muscle; it's located at the junction of the stomach and esophagus when.
acid reflux pediatric