What condition is commonly associated with infants experiencing postprandial regurgitation?

Infants often experience postprandial regurgitation due to gastroesophageal reflux (GER). This condition occurs when the lower esophageal sphincter, which is not fully developed in young infants, allows stomach contents to flow back into the esophagus after feeding. This can lead to the characteristic symptom of regurgitation, commonly observed shortly after meals.

Gastroesophageal reflux is particularly common in infants because their anatomy and physiology differ from that of older children and adults. They have a more horizontal position in relation to gravity and a higher frequency of feeding, both of which contribute to this issue. While regurgitation in infants can be a normal occurrence, it often resolves as the child grows and their digestive system matures.

Other conditions like constipation, colic, and food allergies can cause distress in infants, but they do not typically present with the specific symptom of postprandial regurgitation. Constipation involves difficulty with bowel movements, colic refers to excessive crying and fussiness without a clear cause, and food allergies may lead to symptoms like skin reactions or gastrointestinal distress but are not primarily linked to regurgitation after eating. Thus, the association of GER with postprandial regurgitation makes it the correct answer