Spit-up vs Vomiting — When Pediatricians Actually Worry
By a pediatric healthcare professional
Parents quickly learn that babies and milk go hand in hand… on clothes, shoulders, and sometimes the floor. Many caregivers panic the first time their baby spits up, fearing illness or stomach problems. In reality, most babies spit up — and most of the time it is completely normal.
However, true vomiting is different. Knowing the difference helps parents stay calm when it’s harmless and act fast when it’s not.
1. Spit-up: A normal part of infancy
Spit-up (also called reflux or regurgitation) happens because a baby’s digestive system is still immature.
The muscle between the esophagus and stomach — the lower esophageal sphincter — is weak during the first months of life. Milk easily flows back up, especially after feeding.
Typical features of spit-up
- Small amount of milk dribbles out





























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