What Does Infant Teething Look Like?

A Parent’s Visual Guide to Signs, Symptoms, and Safe Relief

You notice your usually happy 4-month-old has become fussy. They’re drooling more than usual, chewing on everything within reach, and waking up at night crying. Your parent instincts say: teething. But how can you be sure?

Teething is a universal milestone, but it looks different for every baby. For some, it’s a few days of mild fussiness. For others, it’s weeks of disrupted sleep and inconsolable crying. Understanding what normal teething looks like—and what it doesn’t—can save you from unnecessary worry and help you provide the right relief at the right time.

According to the American Academy of Pediatrics (AAP), most babies get their first tooth between 6 and 10 months of age, though some start as early as 3 months or as late as 12 months. The process leading up to that first visible tooth—called eruption—can begin weeks or even months earlier, causing discomfort even when no tooth is visible.

This guide will walk you through:

• The physical signs of teething (what you can see and feel)

• The behavioral symptoms (what you’ll notice in your baby’s mood)

• What teething does NOT cause (critical safety information)

• When it might be something else (like an ear infection)

• Safe ways to soothe teething pain

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Physical Signs: What You Can See

Red, Swollen Gums

The most reliable sign of teething is visible changes in your baby’s gums. Before a tooth breaks through, you may notice:

• Redness or darkening of the gum tissue where the tooth is emerging

• Swelling or puffiness—the gum may look raised or bulging

• A white or bluish bump—sometimes you can actually see the tooth silhouette beneath the gum surface

• A small white tip—the first sign that the tooth has broken through

What to do: Gently lift your baby’s lip and look at their gums. If you see these signs, teething is likely the culprit. You can gently rub the swollen area with a clean finger to provide relief.

Drooling (and the Rash That Follows)

Increased saliva production is one of the earliest signs of teething, often starting as early as 3 months. This happens because teething stimulates the nerves that control salivary glands.

What you’ll notice:

• Constant wetness around the mouth, chin, neck, and chest

• A red, raised rash (sometimes called a “drool rash”) on the chin, cheeks, or neck—caused by digestive enzymes in saliva irritating delicate baby skin

• Cracked or dry patches around the mouth in more severe cases

What to do: Gently wipe your baby’s chin and face with a soft cloth throughout the day. Apply a thin layer of petroleum jelly or a baby-safe barrier cream before naps and bedtime to protect the skin.

Chewing and Biting

Babies begin putting everything in their mouths around 3-4 months old, but teething intensifies this behavior. The pressure from chewing counteracts the pressure of teeth pushing up through the gums, providing natural relief.

What you’ll notice:

• Your baby gnaws on fingers, fists, toys, or crib rails

• They may reject pacifiers or bottles only to immediately start chewing on them instead

• They seek out firm textures (not just soft teethers)

What to do: Provide safe, firm teething toys made of solid rubber. The AAP specifically recommends firm rubber teething rings rather than liquid-filled options

Behavioral Signs: What You’ll Notice

Fussiness and Irritability

Teething is uncomfortable. Some babies handle it better than others, but most will show some degree of increased fussiness.

What you’ll notice:

• More crying than usual, especially in the afternoon and evening

• Shorter temper—your baby may get frustrated more easily

• Harder to soothe—normal comforting techniques may not work as well

• Clinginess—your baby may want to be held more often

According to the AAP, the pain and discomfort from teething can make babies more irritable or prone to crying. However, if your baby is inconsolable for hours or seems to be in severe pain, call your pediatrician—this may indicate something other than teething.

Sleep Disruption

Nighttime can be the hardest time during teething. Without distractions, your baby may feel the discomfort more intensely.

What you’ll notice:

• Frequent night wakings (even in babies who previously slept through the night)

• Difficulty falling asleep at bedtime or for naps

• Shorter naps—your baby may wake up after just 30-45 minutes

Why this happens: Lying down increases blood flow to the head and gums, which can intensify the throbbing sensation. Also, your baby doesn’t have daytime distractions to take their mind off the discomfort.

Reduced Appetite (Especially for Solids)

If your baby has started solid foods, you may notice changes in their eating patterns.

What you’ll notice:

• Refusing the spoon or turning their head away

• Eating less than usual at mealtimes

• Preferring cold or pureed foods over chewy or textured options

• Pulling away from the breast or bottle—the sucking motion can increase gum pain

Important: According to the American Dental Association (ADA), babies may lose their appetite when teething. However, if your baby refuses all fluids for more than 8-12 hours or shows signs of dehydration (fewer than 6 wet diapers per day, dry mouth, crying without tears), call your pediatrician.

Ear Pulling and Cheek Rubbing

You may notice your baby pulling on their ear or rubbing their cheek on the same side as an erupting tooth.

Why this happens: Nerves in the back teeth (especially the molars) branch out to the middle ear. Your baby can’t tell exactly where the pain is coming from—so they may tug at their ear even though the problem is in their gums.

How to tell the difference: If your baby has a fever (over 100.4°F/38°C) and seems most uncomfortable lying down, it’s more likely an ear infection. If you see red, swollen gums and the ear pulling happens only during the day without other cold symptoms, teething is more likely.

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What Teething Does NOT Cause (Critical Safety Information)

This is the most important section for every parent to understand. Teething has been blamed for many symptoms it doesn’t actually cause—and misattributing serious symptoms to teething can delay needed medical care.

Teething Does NOT Cause Fever

Despite what many parents and even some doctors once believed, teething does not cause fever.

The evidence: A landmark 1992 study published in Archives of Disease in Childhood followed 46 healthy infants for 5 months, having mothers take daily temperatures as the first teeth erupted. Not a single child’s temperature exceeded 100.4°F (38°C)—the medical definition of fever—at the time their first tooth arrived.

What the AAP says today: “If your baby’s temperature rises above 100.4°F (38.0°C), teething is not the cause. If your baby has a fever and other symptoms of illness, such as vomiting or diarrhea, call your baby’s doctor.”

What this means for you: A fever over 100.4°F means your baby has an infection or illness that needs medical attention. Don’t dismiss it as “just teething.”

Teething Does NOT Cause Diarrhea or Vomiting

Many parents report loose stools during teething, but the AAP states that teething does not directly cause diarrhea.

So why do teething and diarrhea often happen at the same time?

• Age correlation: Teething typically starts around 6 months—the same age many babies start solid foods. New foods can cause digestive changes.

• Weakened immunity: Around this age, babies lose the antibodies they received from their mother at birth, making them more susceptible to infections.

• Hand-to-mouth behavior: Teething babies put everything in their mouths, increasing their exposure to viruses and bacteria.

When to worry: Call your doctor if diarrhea persists longer than two weeks, contains blood, or is accompanied by fever, signs of dehydration, or significant weight loss.

Teething Does NOT Cause a High Fever, Cold Symptoms, or Serious Illness

A 1992 study found that cold symptoms and diarrhea were not present in infants at the time their first teeth arrived.

If your baby has:

• A fever over 100.4°F

• Runny nose or cough

• Vomiting or persistent diarrhea

• Unusual rash on the body (diaper rash can occur but is different)

It’s not “just teething.” Call your pediatrician.

A Note on “Low-Grade Temperature”

Some reputable sources mention that teething may cause a slight rise in temperature (sometimes called a “low-grade fever”) without reaching the fever threshold of 100.4°F. This is different from a true fever and may reflect the inflammatory process of tooth eruption rather than an infection.

The key distinction: If the temperature stays below 100.4°F and resolves within 24-48 hours without other symptoms, it could be teething-related. Anything higher or longer-lasting requires medical evaluation.

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When It Might Be Something Else: Teething vs. Ear Infections

The symptoms of teething and ear infections overlap significantly, which can be confusing for parents. Both can cause:

• Fussiness and crying

• Trouble sleeping

• Ear pulling or cheek rubbing

• Reduced appetite

Here’s how to tell them apart:

The bottom line: If you see red, swollen gums and your baby is chewing on everything—it’s probably teething. If you see fluid draining from the ear, or if your baby has a fever over 101°F with cold symptoms—it’s probably an ear infection.

When in doubt, call your pediatrician. Ear infections require medical evaluation and sometimes antibiotics.

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The Teething Timeline: What to Expect and When

Teeth don’t appear all at once. They emerge in a predictable order, though timing varies by child.

By the time children are 33 months (almost 3 years) of age, they may have all 20 baby teeth.

Note on molars: Many parents are surprised to learn that the worst teething pain often comes at 12-18 months with the first molars, not during the first teeth. These large, flat teeth have more surface area to push through, causing more intense discomfort.

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Growth Spurts or Teething? How to Tell

Babies go through growth spurts at around 2-3 weeks, 6 weeks, 3 months, 6 months, and 9 months of age. The symptoms can look similar to teething: fussiness, night waking, and increased need for comfort.

How to tell the difference:

A baby between 6 and 12 months can absolutely go through both at the same time.

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What Teething Looks Like at Different Ages

3-4 Months: The Early Signs

At this age, babies begin putting everything in their mouths and drooling more. However, most haven’t started true teething yet—this is more about oral exploration and increased saliva production.

What’s normal: Drooling, chewing on fists, mild fussiness.
What’s likely not teething: Fever, diarrhea, persistent crying.

6-10 Months: The First Teeth

This is when most babies get their first teeth (usually the bottom front two). The days leading up to the first tooth are often the hardest because babies and parents are both new to this experience.

What’s normal: Visible red/swollen gums, disrupted sleep, reduced appetite for solids, increased chewing, fussiness that comes and goes.
What’s not normal: Fever over 100.4°F, persistent vomiting or diarrhea, inconsolable crying for hours.

12-18 Months: The Molars

Many parents report that molars are worse than the first teeth. The pain can be more intense, and babies this age are more mobile and harder to comfort.

What’s normal: Significant fussiness, night wakings, ear pulling, cheek rubbing, refusal to eat (especially chewy foods).
What to watch for: Because molars emerge around the same time children are more prone to ear infections, be vigilant about distinguishing between the two.

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Safe Ways to Soothe Teething Pain

What Doctors Recommend

The FDA and AAP recommend these safe, effective methods:

1. Gum massage: Gently rub your baby’s gums with a clean finger for 1-2 minutes. The counter-pressure can provide immediate relief.

2. Firm rubber teething ring: Give your baby a solid rubber teething ring (not liquid-filled) to chew on. Make sure it’s not frozen—if the object is too hard, it can hurt the baby’s gums.

3. Refrigerated (not frozen) washcloth: Twist a clean, damp washcloth and place it in the refrigerator. The cool (not frozen) fabric is safe for chewing.

4. Cool foods (for babies on solids): Chilled (not frozen) fruit in a mesh feeder or cold yogurt can provide relief.

What to Avoid (Serious Safety Risks)

The FDA has issued strong warnings against several “teething remedies”:

❌ Topical gels containing benzocaine or lidocaine (products like Orajel, Anbesol, etc.)

• Can cause a serious, sometimes fatal condition called methemoglobinemia, in which the oxygen-carrying capacity of red blood cells is greatly reduced.

• Do not use these on children for teething pain.

❌ Teething jewelry (amber necklaces, bracelets, etc.)

• The FDA has received reports of death and serious injuries to infants and children caused by teething jewelry, including strangulation and choking.

• Do not put any jewelry around a baby’s neck or wrist.

❌ Homeopathic teething tablets

• The FDA has warned that these products may contain inconsistent amounts of belladonna (a toxic substance) and other unverified ingredients.

❌ Frozen teethers

• If the object is too hard, it can hurt the child’s gums. Refrigerate, don’t freeze.

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When to Call the Doctor

Call your pediatrician if your teething baby has:

• Fever over 100.4°F (38°C) — teething does not cause this

• Diarrhea or vomiting — teething does not cause these

• Inconsolable crying for more than 2-3 hours

• Refusal to drink for more than 8-12 hours (signs of dehydration)

• Fewer than 6 wet diapers in 24 hours (dehydration sign)

• Symptoms lasting more than 2-3 days without improvement

• Rash on the body (diaper rash from drool is normal; body rash is not)

• Any sign of ear infection (fever, cold symptoms, fluid draining from ear)

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A Note for B2B Buyers

[This section is for wholesale partners and brand owners.]

Understanding what teething actually looks like—and what parents mistakenly attribute to teething—is essential for developing products that truly meet market needs. The teething category has significant whitespace for products that:

• Address molar teething (12-18 months), which causes more intense pain than front teeth

• Provide sustained cooling (water-filled designs outperform solid silicone)

• Offer safe, FDA-compliant materials (no benzocaine, no small parts)

• Support oral motor development (teething affects speech perception, as recent research shows)

➡️ [Contact our B2B team for wholesale inquiries, custom colors, and private labeling]

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Conclusion

Teething is a normal part of infancy, but it doesn’t have to be a mystery. By understanding what teething actually looks like—red, swollen gums; increased drooling; chewing on everything; fussiness; and disrupted sleep—you can provide the right relief at the right time.

Equally important is knowing what teething does not cause: fever over 100.4°F, diarrhea, vomiting, or persistent illness. Misattributing these symptoms to teething can delay needed medical care.

Trust your instincts. If something feels wrong, call your pediatrician. And remember: this phase will pass. Those sleepless nights will fade, and one day soon, you’ll see a toothy grin that makes it all worthwhile.

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