Teal graphic with the title "Does My Baby Actually Have a Tongue Tie? A Breastfeeding Doctor's Honest Take" — a blog post by Dr. Erin Appleton on how tongue ties are actually diagnosed and why function matters more than appearance.

Does My Baby Actually Have a Tongue Tie? A Breastfeeding Doctor's Honest Take

June 22, 20268 min read
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Does My Baby Actually Have a Tongue Tie? A Breastfeeding Doctor's Honest Take

I want to start this one with something that may sound strange coming from a breastfeeding medicine physician who releases tongue ties as part of her practice.

Most of the tongue ties parents come in worried about are not, in fact, the problem.

Some are. A meaningful number are. And when they are, releasing them can be life-changing for the feeding relationship. But the cultural conversation around tongue ties — especially online, especially in the last few years — has tipped from "underdiagnosed and worth taking seriously" into something closer to "the cause of every feeding problem, every sleep issue, every fussy baby, every parent's exhaustion."

It's not.

Does My Baby Actually Have a Tongue Tie? A Breastfeeding Doctor's Honest Take

And the families who pay the price for that overcorrection are the same ones who pay the price for the underdiagnosis: parents who came in for honest answers and left with either a procedure they didn't need, or a dismissal that left a real problem unaddressed.

I want to walk you through how a tongue tie is actually diagnosed — by someone trained in lactation medicine — and what that means for the feeding question you're carrying right now.

What a tongue tie actually is

A tongue tie, clinically called ankyloglossia, is a restriction of the tongue's movement caused by a tight, short, or anteriorly-attached lingual frenulum — the thin band of tissue that connects the underside of the tongue to the floor of the mouth.

Most babies are born with some kind of frenulum. That is normal anatomy. The frenulum becomes a tongue tie — meaning a clinical problem — when it restricts function enough to interfere with feeding, weight gain, latching, or, eventually, other oral skills.

That last word is the one that matters: function.

Function, not appearance

Here is the single most important thing I can tell you about tongue tie diagnosis:

A tongue tie cannot be diagnosed from a photo.

Not from a photo in a Facebook group. Not from a photo a stranger looked at and said "definitely tied." Not from a photo I look at, if I'm being honest with you.

A photo can tell me what a frenulum looks like. It cannot tell me how the tongue moves. It cannot tell me whether milk is transferring. It cannot tell me whether the seal is holding, whether the swallow is coordinated, whether the baby is working three times harder than they should have to.

Tongue tie diagnosis lives in those questions — the functional ones. And those questions get answered through a hands-on, in-person assessment by someone who is trained to do them.

That assessment includes things like:

  • How the tongue lifts when the baby cries or extends

  • Whether the tongue can cup around a finger or breast tissue

  • How the baby coordinates suck, swallow, and breath

  • What happens to the parent's nipple during and after a feed

  • What the seal looks like, what the swallow sounds like, what the rhythm is

  • Whether milk transfer is actually adequate

  • Whether the parent's body is showing signs that something is off — pain, supply changes, nipple shape after feeds, cracking, bleeding

I've assessed tongues that looked dramatic from the outside and worked beautifully on the inside. I've assessed tongues that looked unremarkable and were the reason a baby had been losing weight for three weeks. Appearance is not the diagnosis. Function is.

The Venn diagram of feeding problems

Here is something I say in almost every tongue tie consult I do:

I am not a factory. I do not just see one thing. I see the complexity that comes around the Venn diagram that is a tongue tie.

A baby who isn't feeding well rarely has only one thing going on. The picture is usually some combination of:

  • Anatomy (which may or may not include a true tongue tie)

  • Positioning and latch mechanics (often fixable without any procedure)

  • Maternal or parental body factors (nipple shape, supply, let-down speed, history of breast surgery)

  • Neurological maturity (a baby with an immature suck pattern will often look "tied" until they aren't)

  • Recovery from birth (a baby who's been through a hard delivery may have tension patterns that look like tie symptoms)

  • Reflux, gas, or gastrointestinal issues

  • Sometimes, yes — a genuine, functionally significant tongue tie

The honest clinical work is not "is there a tie or isn't there." The honest clinical work is "what is the actual cause of the actual problem, and where does this anatomy sit inside that bigger picture?"

When tongue tie release is the right call, it's because the function is clearly impaired, the impact on feeding is clearly demonstrated, and the other parts of the picture have been considered.

When release is the wrong call, it's because someone short-circuited that process — usually with the best of intentions, sometimes for less good reasons — and a baby got a procedure they didn't need.

Symptoms that warrant a real assessment

The signs that make me want to actually look at a baby's mouth, in person, include:

On the feeding side:

  • Persistent nipple pain past the first couple of weeks

  • Cracked, creased, or misshapen nipples after feeds

  • Clicking sounds during feeds

  • Feeds that take more than 45 minutes consistently

  • A baby who falls asleep at the breast or chest before transferring enough milk

  • Poor weight gain or weight loss past day five

  • A baby who is fussy through and after most feeds, not just sometimes

On the baby's side:

  • Inability to extend the tongue past the lower gum line

  • A heart-shaped or notched tongue tip on extension

  • Difficulty taking a deep latch

  • Reflux symptoms that don't have another clear explanation

  • Excessive air swallowing during feeds

On the parent's side:

  • Low milk supply that doesn't respond to standard supply-support measures

  • Recurrent plugged ducts or mastitis without another clear cause

  • Pumping output that doesn't match what the baby seems to be doing at the breast

If several of those are present — not one, not two, but a cluster of them — it is worth a real assessment by an International Board Certified Lactation Consultant (IBCLC), ideally one who works alongside a medical practitioner trained in lactation medicine.

If only one is present, or the feeding is otherwise going well, that one symptom is rarely a reason to release a frenulum.

What I want parents to walk away with

The tongue tie conversation has become so loud, online and offline, that I worry about two specific groups of parents:

The first group is told by everyone around them that their baby is fine, that they need to push through, that the pain will resolve, that the weight will catch up. Sometimes that's true. Sometimes there is a genuine, functionally significant tongue tie underneath it, and the family is being asked to suffer through what doesn't need to be suffered through.

The second group is told by everyone in their online community that their baby is definitely tied, that every symptom they have is the tie, that release is the answer, that the practitioners who said no were wrong. Sometimes the online community is right. Often, in my experience, it isn't — and a procedure happens that didn't need to.

Both of those groups deserve better than what they're getting. Both deserve a real, hands-on, function-based assessment by someone who looks at the whole picture and tells them the truth, including when the truth is not the answer they were hoping for.

That is the kind of care Nurture has always tried to offer. Not the echo chamber answer. Not the dismissive answer. The honest one.

What to do if you're sitting with this question right now

A few practical things:

Find an IBCLC. Not just a "lactation educator" or someone who has read a lot online — an actual International Board Certified Lactation Consultant. The credential matters because the training is rigorous and the scope is specific.

Ask whether they assess function, not just appearance. This is the single best question you can ask. If the answer is some version of "we look at the tongue and decide if it's tied," keep looking. If the answer involves how the tongue moves, how the baby feeds, how the parent is doing, what milk transfer looks like — you're in better hands.

Get a feeding assessment before you get a procedure assessment. Most of the families who eventually need a tongue tie release benefit hugely from a thorough feeding assessment first, because the assessment either resolves the problem without a procedure, or makes the case for the procedure clear and well-supported.

Beware of the certainty of strangers. Online groups, well-meaning relatives, and even some practitioners will tell you with great confidence what your baby has and what you should do about it. Confidence is not the same as accuracy. The most experienced practitioners I know are the most willing to say "I'm not sure yet — let's look more carefully."


Where to go from here

While our Lethbridge clinic is temporarily closed, the resource I can still put in your hands is Latching Logic — the program I built to walk families through the functional questions that matter most. How a latch actually works. What milk transfer looks like. When something is off and when it isn't. The same lens I bring to a tongue tie consult.

blog author avatar

Dr. Erin Appleton MD, CCFP, IBCLC, FABM

Dr. Erin Appleton MD, CCFP, IBCLC, FABM is the founder of BreastfeedingMD and the visionary behind the evidence-based Latching Logic™ program. As a practicing physician and an International Board Certified Lactation Consultant (IBCLC) with over 15 years of clinical experience, Dr. Vance is dedicated to transforming the feeding journey from a source of stress and uncertainty into one of confidence and connection. Her approach synthesizes medical expertise with lactation science, focusing on effective, long-term solutions for common challenges such as painful latch, low supply, and plugged ducts. Driven by a mission to empower parents with accurate knowledge, Dr. Vance aims to give every family the tools they need to stop guessing and start knowing, ensuring a peaceful and successful feeding experience.

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