Repeated Vomiting in Babies!! Gastroesophageal Reflux disease.. In infants, gastroesophageal reflux (GER) happens when stomach contents come back up into the esophagus, which can cause regurgitation and spitting up. GERD is a more severe and long-lasting condition in which GER causes repeated symptoms that are bothersome or lead to complications.Most infants with GER do not need treatment. Depending on an infant’s age and symptoms, doctors may recommend lifestyle changes to treat GER or GERD sym