Which of the following symptoms is often associated with gastroesophageal reflux disease (GERD) in infants?

Vomiting after feedings is a common symptom associated with gastroesophageal reflux disease (GERD) in infants. In GERD, the lower esophageal sphincter is weak or underdeveloped, allowing stomach contents, including acid, to flow back into the esophagus. This backflow can result in regurgitation or vomiting, particularly after feeding when the stomach is full. Infants may exhibit this symptom shortly after they eat, which can be distressing for both the infant and caregivers.

Understanding this symptom is key in diagnosing and managing GERD in infants, as it can lead to feeding aversion, poor weight gain, and other complications if not addressed. Other symptoms of GERD might include irritability or fussiness, particularly during or after feedings, but the hallmark sign of vomiting is pivotal in distinguishing it from other gastrointestinal issues.