Why Does My Baby Have a White Spot on His Gums?

A white spot on your baby’s gums is almost always a harmless developmental cyst that will disappear on its own. The most common culprit is a group of tiny, painless cysts that form as part of normal mouth development in the womb. These are so common that studies examining newborns’ mouths find them in a third to more than half of all babies. Less often, the spot turns out to be oral thrush, an early tooth poking through, or a handful of other conditions that range from benign to worth a pediatrician’s attention.

Epstein’s Pearls, Bohn’s Nodules, and Dental Lamina Cysts

These three names sound clinical, but they all describe the same basic thing: small, white or yellowish-white bumps that appear on a newborn’s gums, palate, or the ridge where teeth will eventually grow. They arise from leftover tissue that was involved in building the baby’s mouth and developing dental structures before birth.¹ The distinctions among the three are mostly about location: Epstein’s pearls sit along the midline of the palate, Bohn’s nodules tend to appear on the outer gum ridges or the junction of the hard and soft palate, and dental lamina cysts show up on the crest of the gum where teeth will later emerge.

What matters to parents is that all three are extremely common and entirely benign. A study of 1,000 healthy newborns found oral mucosal cysts in about 61% of babies, while Epstein’s pearls appeared in roughly 38%.² A separate study of over a thousand neonates in India recorded Bohn’s nodules in about 47% and Epstein’s pearls in about 35%.³ In other words, your baby having one or more of these bumps puts them squarely in the majority. The cysts typically rupture or shed on their own within a few weeks to a couple of months, and they do not need any treatment.

How to Tell If It Might Be Oral Thrush Instead

Oral thrush looks different from a developmental cyst, but the difference can be subtle when you’re staring into a squirming baby’s mouth. Thrush is a yeast infection caused by an overgrowth of Candida, a fungus that naturally lives in the mouth. Instead of a single small bump, thrush usually shows up as thick, yellowish-white patches that can coat the tongue, inner cheeks, and gums.⁴ The patches often look like curdled milk, and the key giveaway is that they don’t wipe off easily. If you try to gently rub one with a clean finger or soft cloth and it stays put or leaves a raw, reddish area underneath, thrush is a likely explanation.

Thrush is common in young infants because their immune systems are still maturing. It can sometimes make feeding uncomfortable, and breastfeeding mothers may notice sore, cracked nipples if the infection passes back and forth between baby and breast. Unlike developmental cysts, thrush generally does need treatment, usually an antifungal gel or liquid prescribed by a pediatrician. It resolves quickly with medication but can recur, so it helps to sterilize pacifiers and bottle nipples regularly during and after treatment.

Natal and Neonatal Teeth

Occasionally, that white spot is not a cyst at all but the tip of an actual tooth. Teeth present at birth are called natal teeth; those that appear within the first month of life are neonatal teeth. Both are uncommon. One study found natal teeth in about 74% of affected children and neonatal teeth in the remaining 26%, with all teeth being lower central incisors.⁵ These teeth often look different from the baby teeth that arrive months later. They tend to be smaller, cone-shaped, and yellowish, with softer-than-normal enamel and little or no root underneath.⁶

The biggest concern with natal teeth is whether they are stable. That same study reported that about 31% of the children with natal teeth had teeth so loose they needed to be removed right away to prevent the tooth from falling out and becoming a choking hazard.⁵ If the tooth is well-attached, dentists often prefer to leave it in place and monitor it. The other issue is friction damage: a sharp or rough natal tooth can rub against the underside of the baby’s tongue during sucking and create painful ulcers, a condition called Riga-Fede disease.⁷ That same friction can also cause sore, cracked nipples in breastfeeding mothers.⁸

When Riga-Fede disease develops, the contact between the tooth and tongue during sucking and swallowing can worsen the ulcers and interfere with feeding, raising the risk of nutritional problems in the newborn.⁹ In one reported case, a baby girl had a neonatal tooth with a tongue ulcer that made breastfeeding difficult for both mother and child; after the tooth was extracted, breastfeeding resumed immediately and the ulcer healed well.⁸ So if your baby seems to have a real tooth and feeding is suddenly a struggle, an evaluation by a pediatric dentist is worth prioritizing.

Eruption Cysts

An eruption cyst is a fluid-filled bump that forms over a tooth just before it breaks through the gum. In older babies, these are fairly routine and often appear as bluish or translucent swellings around the time teeth start coming in. In newborns, eruption cysts are unusual because tooth eruption itself is unusual at that age, but they do happen. One reported case involved a congenital eruption cyst that was simply monitored without any surgical intervention; by the fourth month the cyst had resolved on its own and the baby’s central incisors erupted normally.¹⁰

The practical point for parents is that eruption cysts rarely need treatment. If you notice a dome-shaped, slightly translucent bump on your baby’s gum ridge that seems to be sitting right over where a tooth could appear, there’s a good chance you’re looking at one. The cyst usually ruptures on its own when the tooth pushes through. In the meantime, it isn’t painful, and your baby can feed normally.

Less Common Possibilities

Once you’ve ruled out the common culprits, a few rarer conditions round out the differential. Each is uncommon enough that you’re unlikely to encounter it, but knowing they exist can help you recognize when a spot warrants a closer look.

Congenital Epulis

A congenital epulis is a benign growth that appears on the gum ridge at birth. It tends to be pink or reddish rather than white, but small ones can look pale and be mistaken for a cyst. The growth is composed of distinctive large, granular cells confirmed on biopsy.¹¹ It overwhelmingly affects girls, with a female-to-male ratio of about 10 to 1, and typically presents as a single mass.¹² Although benign and non-recurring, the growth can sometimes be large enough to interfere with breathing or feeding, which is why it is usually removed surgically soon after birth.¹² A pathologist examines the excised tissue to confirm the diagnosis.¹³

Herpes Simplex Virus

Herpes simplex virus type 1 (HSV-1) can cause white or yellowish sores on the gums and inside the mouth of an infant, usually accompanied by swollen, bleeding gums and small fluid-filled blisters around the lips. A case report documented a five-month-old girl who developed painful herpetic gingivostomatitis along with perioral vesicles.¹⁴ HSV infection in young infants can be serious because their immune systems are immature. If white spots are accompanied by fever, irritability, drooling, refusal to feed, and blisters on or around the lips, you should contact your pediatrician promptly rather than wait and see.

How to Decide When to Call the Pediatrician

Oral findings in newborns create a wide range of reactions in parents, and the anxiety is understandable. An early examination and prompt diagnosis can help guide management and provide a baseline for tracking any changes over time.¹⁵ That said, not every white spot warrants an emergency call. A good rule of thumb is to consider what’s happening around the spot.

Signs that the spot is probably harmless and can wait until a routine visit:

Small and round: The spot is a tiny, firm, pearl-like bump sitting on the gum ridge or along the roof of the mouth, with no redness around it.
No feeding trouble: Your baby latches and feeds normally, showing no signs of pain or refusal.
No fever: Your baby’s temperature is normal and they are behaving like their usual self.
Not growing: The spot stays the same size or gets smaller over a few days to weeks.

Signs that you should reach out to your pediatrician sooner rather than later:

Thick white patches: Multiple patches that look like curdled milk and don’t wipe off suggest thrush, which benefits from treatment.
Feeding difficulty: Your baby refuses the breast or bottle, fusses during feeds, or seems to be in pain.
Blisters or sores: Fluid-filled blisters on the gums, tongue, or lips, especially with fever, could indicate a viral infection.
A loose tooth-like structure: Something that looks like it could come out poses a choking risk and should be evaluated quickly.
A growing mass: Any lump that is increasing in size, interfering with breathing, or appears to be attached deep in the gum tissue needs professional assessment.

What You Can Safely Do at Home

For the most common developmental cysts, the answer is straightforward: nothing. Don’t try to pop, scrape, or squeeze the bump. These cysts sit close to the surface and will shed on their own as the tissue matures. Rubbing them with a cloth or trying to lance them with a pin introduces bacteria into your baby’s mouth and creates an infection risk where there wasn’t one.

Keep the mouth area clean by gently wiping your baby’s gums with a soft, damp cloth once or twice a day. This is a good habit for general oral hygiene in the pre-tooth stage anyway. If thrush is the culprit, the pediatrician will prescribe something specific, and wiping down pacifiers and bottle nipples in hot water after each use can help prevent reinfection during treatment.

Avoid applying any home remedies, gels, or numbing agents to the spot unless directed by a doctor. Babies have sensitive mucosal tissue, and products meant for adults or even older children can cause irritation or, in the case of certain numbing gels, have safety warnings specifically against use in infants under a certain age.

Why Newborns Have So Many Mouth Findings

If it seems like newborns’ mouths are unusually busy with cysts, nodules, and occasional teeth, it’s because a remarkable amount of development is packed into a small space during the final months of pregnancy. The palate fuses from two halves into one, dental tissue begins organizing into structures that will later become teeth, and salivary glands start forming. Remnants of this process frequently leave behind small clusters of trapped cells that present as the cysts described above. The fact that studies consistently find oral mucosal cysts in well over half of all examined neonates tells you that having them is arguably more normal than not having them.²

Most of these findings resolve without anyone noticing. Parents who spot them are usually the ones who happen to get a clear look during a yawn or a cry. The timing of discovery sometimes coincides with an unrelated fussy period, which can lead to the assumption that the bump is causing pain. In the case of developmental cysts, it almost certainly isn’t. They contain keratin (the same protein found in hair and nails) rather than pus, and they sit on the surface without involving nerves.

The Teething Question

Many parents notice a white spot on the gums at around four to six months and wonder if teething is starting. It can be. The first teeth to come in are usually the lower central incisors, and the gum above an incoming tooth can look swollen, whitish, or slightly translucent as the tooth pushes closer to the surface. This is normal teething, and the white appearance reflects the tooth crown showing through the thinning gum tissue.

Teething-related gum changes differ from neonatal cysts in a few ways. They tend to appear later (most babies don’t cut their first tooth until around six months, though the range is wide). The gum over the erupting tooth may look stretched or bulging, and the baby is often fussy, drooling more than usual, and chewing on anything within reach. If a fluid-filled dome forms over the erupting tooth, that’s an eruption cyst, and as noted earlier, it almost always resolves on its own once the tooth breaks through.¹⁰

There is no evidence that rubbing whiskey on gums, using amber teething necklaces, or applying homeopathic teething tablets helps with teething discomfort, and some of these carry genuine safety risks. A chilled (not frozen) teething ring or a clean, wet washcloth to gnaw on is the safest way to soothe a teething baby. If you think your baby is in real pain, a pediatrician can advise on age-appropriate pain relief.

Pacifiers, Bottles, and Mechanical Marks

Not all white or pale marks on the gums come from inside the body. Repeated friction from a pacifier or bottle nipple can occasionally create a small callus or irritated spot on the gum tissue, especially if the pacifier is a poor fit or the baby is a vigorous sucker. These friction marks tend to be flat rather than raised and usually resolve when the source of irritation is removed or adjusted.

Pacifiers and teething devices also carry a small injury risk. An analysis of emergency department data from a ten-year period estimated over 5,400 injuries to children under two from pacifiers and teething devices nationwide, most of which happened at home during falls while the child was using the device.¹⁶ The vast majority of those injuries were minor and the children were released after evaluation, but the data is a reminder to inspect pacifiers regularly for cracks or loose pieces and to supervise babies during use. A damaged pacifier can leave sharp edges that irritate gum tissue and create the kind of white or reddened mark that looks alarming.

1
PubMed Central. Dental lamina cysts in a newborn infant
2
PubMed Central. Assessment of Intraoral Findings of Neonates, Born in and around Meerut City
3
Karger. Oral Findings in Newborn Children in and around Mangalore, Karnataka State, India
4
PubMed Central. Neonatal thrush of newborns: Oral candidiasis?
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Scientific Reports. Natal and neonatal teeth in newborns and infants: a case-control study
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PubMed Central. Management of an infant having natal teeth
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PubMed Central. Riga-Fede Disease Associated with Natal Teeth: Two Different Approaches in the Same Case
8
PubMed Central. Neonatal tooth with Riga-Fide disease affecting breastfeeding: a case report
9
Global Pediatrics. Riga-Fede disease in an infant: Clinical challenges and management strategies in resource limited setting- a case report
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PubMed Central. Eruption Cyst in the Neonate
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PubMed Central. Congenital epulis of the newborn
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PubMed Central. Congenital Epulis of the Newborn: A Case Report and Literature Review
13
Journal of Surgical Case Reports. Congenital epulis: a rare diagnosis of newborn
14
PubMed Central. Oral and perioral herpes simplex virus infection type I in a five-month-old infant: A case report
15
PubMed Central. Oral Lesions in Neonates
16
PubMed Central. Pacifiers and Teething Devices: A Risk for Craniofacial Injury in Children Under 2 Years Old