30 August 2026 · Veronica Chi
Business & Product Director · Mum of two
Burping vs Reflux: What's the Difference?
Wind is swallowed air travelling back up. Reflux is stomach contents — milk, and acid with it — coming back up the food pipe because the muscular valve at the top of a baby's stomach has not finished developing. They look similar from the outside and they are not the same thing, which matters because burping fixes one of them and does nothing for the other.
How do you tell them apart?
| Wind | Reflux | |
|---|---|---|
| What it is | Swallowed air trapped in the stomach | Stomach contents rising back up the food pipe |
| When | During and just after a feed | During feeds, and up to an hour after, often when laid flat |
| What you see | Rigid tummy, knees pulled up, tense then relief | Arching backward, pulling off the feed, swallowing repeatedly |
| The cry | Builds, then stops abruptly when the air moves | Recurs across the feed and afterwards, and does not resolve with a burp |
| Bringing up milk | A small amount with the burp | Frequent possetting, sometimes with a sour smell |
| Does burping help? | Yes — it is the fix | No. Upright holding helps; the burp itself does not |
| Course | Fades as she matures, by around 4 months | Peaks around 4 months, mostly resolved by 12 |
The clearest single tell: wind resolves the moment the burp arrives. Reflux does not, because the burp was never the problem.
Is reflux in babies normal?
Extremely. Roughly half of all babies possett regularly in the first months, and the great majority are what paediatricians unkindly call happy spitters — babies who bring milk up, are unbothered by it, feed well and gain weight normally. That needs laundry rather than treatment.
It becomes worth a doctor's attention when it is making her unhappy or affecting her growth. The dividing line is not how much milk appears on your shoulder; it is whether she is distressed and whether she is thriving.
What is silent reflux?
The same process without the visible milk. The contents come part of the way up and are swallowed again, so there is nothing to see — but the discomfort is real, and the baby arches, cries, swallows repeatedly and pulls off feeds exactly as she would with visible reflux.
It is often mistaken for wind for weeks, because the parent keeps burping a baby who has no air to release. If you are winding thoroughly and correctly and the crying pattern is unchanged, that mismatch is itself informative.
What helps reflux, if burping does not?
- Smaller, more frequent feeds, so there is less volume to come back up.
- Holding her upright for twenty to thirty minutes after every feed. This is the single most effective thing you can do at home.
- Winding thoroughly and unhurriedly anyway, because air on top of a full stomach makes reflux worse even though it is not the cause.
- Checking teat flow if she is bottle-fed, and latch if she is breastfed — both affect how much she takes and how fast.
- Never propping or inclining the cot. Sleep stays flat and on the back regardless of reflux, and inclined sleepers have been recalled for good reason.
Safe sleep with reflux
What are the red flags?
Most reflux needs patience and a lot of muslin. Some of it needs a doctor, and a few signs need one the same day.
- Forceful or projectile vomiting, particularly if it is getting more frequent.
- Green or yellow-green vomit, or blood in vomit or stools.
- Poor weight gain, or weight that has flattened off.
- Refusing feeds, or feeding that has become a battle at every attempt.
- Eczema that is hard to control, mucus in stools or persistent diarrhoea alongside the reflux — the picture that raises cow's milk protein allergy.
- A baby who is unusually floppy, hard to rouse, has a fever, or a hard swollen tummy.
None of that is a reason to be anxious about the ordinary version. The ordinary version is a baby who brings up a mouthful, grins about it, and needs a clean cloth.
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Questions parents ask
What is the difference between wind and reflux in babies?
Wind is swallowed air travelling back up and is relieved by a burp. Reflux is stomach contents rising back up the food pipe, and burping does not relieve it.
How do I know if my baby has reflux or just wind?
Wind resolves the moment the burp arrives. Reflux keeps recurring across the feed and afterwards, with arching, repeated swallowing and pulling off, and no relief from winding.
What is silent reflux?
Reflux where the contents are swallowed again rather than brought up, so there is nothing visible. The arching, crying and repeated swallowing are the same.
Does burping help reflux?
Not directly, but wind on top of a full stomach makes reflux worse, so winding thoroughly still helps. Holding her upright for twenty to thirty minutes after feeds does more.
Should I raise the head of the cot for reflux?
No. Sleep stays flat and on the back regardless of reflux. Inclined sleepers have been recalled after infant deaths.
When should I see a doctor about reflux?
Forceful or projectile vomiting, green vomit, blood in vomit or stools, poor weight gain, feed refusal, or reflux alongside eczema and mucus in stools all need medical review.
Sources
- NHS — Reflux in babies
- American Academy of Pediatrics — Burping, hiccups and spitting up
- The Lullaby Trust — Safer sleep advice
- HealthHub — Ministry of Health Singapore
This guide is general information, written to help you understand a topic and ask better questions — it is not medical advice and does not replace your own doctor, midwife or paediatrician. Anything that worries you about your baby belongs with them.