If feeding is painful, or taking forever, or your baby seems to be working hard and getting little, you have probably already been given a lot of advice. Some of it will have been about positioning. Some about supply. Some about persistence.
This page is about a different question: whether your baby’s tongue can physically do what feeding requires.
What the tongue has to do
Breastfeeding depends on the tongue being able to extend, elevate, cup, move side to side, spread and control a swallow. Restriction of any one of those can affect a feed.
The one that matters most, and gets checked least, is elevation — lifting the mid and back of the tongue to the palate to create suction. A baby who cannot elevate cannot generate the vacuum a feed depends on, no matter how good the positioning is.
Sticking the tongue out is not on that list, and it is not a useful test. Plenty of babies with significant restriction can poke their tongue out perfectly well.
Signs parents notice in the baby
Clicking during feeds can suggest the seal is breaking and air is getting in. Milk escaping at the corners of the mouth points the same way. A baby who repeatedly slips off, or who feeds for a very long time and still seems unsatisfied, may be struggling to hold and maintain the latch.
Very long feeds and poor weight gain often travel together, and that pairing is worth taking seriously.
None of these signs confirms a tongue tie on its own. Each has other possible causes. What they do justify is a proper look — a functional assessment rather than guesswork.
Your symptoms are clinical information too
This is the part that often gets missed, and it matters.
If you are in pain, that is not just context for your baby’s assessment. It is diagnostic information in its own right.
Nipple pain and damage, and particularly a nipple that comes out compressed, blanched or distorted in shape after a feed, is one of the most telling signs there is. A misshapen or lipstick-shaped nipple suggests the tongue has been clamping to compensate, because it could not create suction the normal way.
Falling supply and sheer exhaustion belong in the picture too. You are not simply the reporter of your baby’s symptoms — what your body is telling you is part of the assessment.
If feeding stopped, that was not a failure
Many parents arrive having stopped breastfeeding weeks or months earlier, carrying a sense that they did not try hard enough.
Stopping is rarely about wanting to. It is usually about pain, exhaustion, and not having found the cause in time. If a tongue could not do its job, no amount of persistence would have changed the mechanics — and being told to keep trying was never going to fix it.
It is also worth knowing that a restriction can still be worth assessing after breastfeeding has ended. Which brings us to the next point.
Weight gain on formula does not rule anything out
Once a baby moves to a bottle, the feeding crisis usually settles. Weight goes up. Everyone relaxes. Every metric looks reassuring.
But moving to formula does not change the tongue. It removes the symptom that everyone was watching. The same restriction is still there, and the same tongue will meet solids in a few months, and speech after that.
So if feeding difficulties resolved by switching, and you have wondered since whether something was going on, that instinct is worth acting on rather than dismissing.
Bottle-fed babies can have difficulties too
Feeding problems are not exclusive to breastfeeding, and a bottle is not proof that everything is fine. Difficulty with the seal, milk escaping, long or tiring feeds and unsettledness after feeds can all occur with a bottle as well.
What an assessment involves
Assessment is by Dr Helen Fung, and it is a functional assessment rather than a look.
It starts with your history — the feeding, the pain, what has already been tried, and who else is involved. It includes examining what the tongue can actually do, and gentle palpation of the floor of the mouth, because some restrictions are simply not visible. A tongue can look completely normal on inspection while a tight band is easily felt.
Sometimes the most useful outcome is that no treatment is needed. Sometimes the next step is support from a lactation consultant, feeding specialist or myofunctional therapist rather than a procedure. Sometimes a release is appropriate — and if it is, it is only ever part of a plan that includes therapy before and after.
We work closely with lactation consultants, and if you already have one, please bring what they have observed. Their input is genuinely useful, and often shapes the plan.
If you are still feeding, do not wait until it is unbearable
There is no prize for enduring painful feeding. If it hurts, if feeds are taking most of your day, or if your baby is not gaining as expected, that is enough reason to have things looked at — even if the answer turns out to be that no procedure is needed.
Please seek prompt medical care if you are worried about your baby’s weight, hydration or general wellbeing.
Common questions
Does painful feeding always mean tongue tie?
No. Nipple pain has several possible causes, including positioning, latch, infection and other factors. A functional assessment helps work out whether restriction is contributing.
My baby is gaining weight — could there still be a tie?
Yes. Weight gain, particularly on formula, does not rule out a restriction. It removes the symptom that was most visible.
Can my baby have a tie if she can stick her tongue out?
Yes. Protrusion is one of the least functionally relevant movements. Elevation is what feeding depends on, and the two are independent.
Is it too late if we have already stopped breastfeeding?
No. Assessment is still worthwhile — the same tongue will meet solids and speech later on.
Do I need a referral?
No. Bring anything you have from your GP, lactation consultant, midwife or child health nurse.
What to do next
Book a tongue and lip tie assessment, or read more about what an assessment involves.
This guide is general information and does not replace an individual assessment. Your child’s clinician will confirm what is appropriate for them.