Gastroesophageal reflux is a backflow (reflux or regurgitation) of
food and stomach acid into the esophagus, which is the tube that connects the
mouth to the stomach. When reflux irritates the
lining of the esophagus and causes burning pain, difficulty eating, weight loss, or other problems, it is called gastroesophageal reflux disease (GERD).
Most babies have reflux. Babies with reflux may spit up. And some healthy babies
may spit up frequently.
Babies who have GERD may cry because of the
burning pain. Sometimes GERD causes breathing problems, if the baby breathes stomach