Teething can cause mild temperature rises, but high fevers usually indicate illness, not tooth eruption.
Understanding the Teething Process and Temperature Changes
Teething is a natural developmental milestone where an infant’s primary teeth begin to emerge through the gums. This process typically starts around six months of age but can vary widely. Parents often notice increased fussiness, drooling, and gum discomfort during this time. One common concern is whether teething causes fevers.
Infants’ bodies react to the irritation and inflammation caused by teeth pushing through sensitive gum tissue. This localized inflammation can sometimes lead to a slight increase in body temperature, often referred to as a low-grade fever. However, it’s important to differentiate between a mild temperature rise and a true fever caused by an infection or illness.
Medical experts generally agree that teething may cause a temperature increase up to about 100.4°F (38°C). Anything higher than this is usually unrelated to teething and should prompt a consultation with a healthcare provider. Understanding this distinction helps parents avoid unnecessary worry or overlooking serious health issues.
Why Do Infants Sometimes Seem Feverish During Teething?
The physical act of a tooth breaking through the gum can trigger mild inflammation. This inflammation may cause slight swelling and tenderness in the gums, which in turn can stimulate the body’s immune response. The immune system might react by releasing chemicals called cytokines that can raise body temperature slightly.
Additionally, during teething, infants tend to drool more and often put objects into their mouths. This increased oral exploration can expose them to bacteria and viruses, raising the risk of infections that might cause a fever. Thus, while teething itself causes only mild temperature changes, accompanying illnesses are common during this age range.
Parents often confuse irritability and mild warmth with fever. It’s essential to use a reliable thermometer to check an infant’s temperature accurately. Rectal thermometers provide the most precise readings for babies under three months. For older infants, oral or underarm measurements can be used but may be less accurate.
Common Signs of Teething Versus Signs of Fever
Here’s a quick comparison to help distinguish between teething symptoms and fever symptoms:
- Teething Signs: Drooling, gum swelling, mild irritability, chewing on objects, slight temperature elevation (below 100.4°F)
- Fever Signs: Temperature above 100.4°F, lethargy, poor feeding, persistent crying, rash, vomiting, diarrhea
If an infant displays signs beyond typical teething discomfort—especially a high fever—medical evaluation is necessary to rule out infections such as ear infections or viral illnesses.
Scientific Studies on Teething and Fever
Multiple studies have investigated whether teething directly causes fevers. The consensus is that while teething may be associated with slight increases in temperature, it does not cause significant or sustained fevers.
One study published in the Journal of Pediatrics examined infants’ temperatures during active teething periods and found no consistent evidence linking teething to fevers above 100.4°F. Another research article from the American Academy of Pediatrics emphasized that high fever during infancy should never be attributed solely to teething without thorough medical assessment.
These findings reinforce that while mild temperature elevations are common during teething due to inflammation and increased blood flow in gums, any significant fever is likely due to another underlying cause.
How to Monitor and Manage Temperature Changes During Teething
Parents should carefully track their infant’s symptoms when teething begins. Using a digital thermometer regularly helps distinguish between normal teething discomfort and signs of illness.
Here are practical tips for monitoring and managing temperature:
- Measure Temperature Accurately: Use a rectal thermometer for infants under three months; otherwise, oral or underarm methods are acceptable.
- Observe Behavior: Note if irritability is mild and related to gum discomfort or if it’s accompanied by lethargy or poor feeding.
- Maintain Hydration: Ensure the baby stays well-hydrated as fever—even mild—can increase fluid loss.
- Offer Comfort: Use chilled teething rings or gentle gum massages to soothe inflamed gums.
- Avoid Overmedication: Only use fever reducers like acetaminophen if the baby has a confirmed fever above 100.4°F or shows distress.
If the infant’s temperature rises above 100.4°F or if other symptoms such as vomiting, diarrhea, rash, or difficulty breathing occur, seek medical advice immediately.
Temperature Ranges During Teething vs. Fever Illnesses
| Condition | Typical Temperature Range (°F) | Common Symptoms |
|---|---|---|
| Mild Teething-Related Temperature Rise | 99.0 – 100.4 | Mild gum swelling, drooling, irritability |
| Fever Due to Infection | >100.4 (often higher) | Lethargy, poor feeding, rash, vomiting |
| No Fever / Normal | <98.6 (normal) | No symptoms or mild fussiness without temperature rise |
This table highlights how temperature ranges and associated symptoms differ between typical teething discomfort and true fever illnesses requiring medical attention.
The Role of Immune System Development During Teething Age
Infants experience rapid immune system development during the first year of life. This period coincides with typical teething ages from about four months up to two years as primary teeth emerge in stages.
Because babies explore their environment orally—putting hands and objects in their mouths—they encounter new germs regularly. This exposure helps build immunity but also increases vulnerability to infections like colds or ear infections that cause fevers.
The immune system’s heightened activity around this time can sometimes lead parents to mistakenly blame all symptoms on teething alone. It’s crucial to recognize that while teething causes localized gum inflammation, systemic symptoms such as prolonged high fever are more likely linked to infections unrelated directly to tooth eruption.
The Inflammation Link: Why Mild Warmth Happens
Inflammation is the body’s natural response to injury or irritation. When a tooth pushes through gum tissue:
- The gums swell slightly.
- The area becomes tender and red.
- The body sends immune cells to aid healing.
This process can cause a minor rise in body temperature because inflammatory chemicals affect the hypothalamus—the brain region controlling body heat regulation. However, this rise is generally mild and short-lived compared with fevers caused by infectious agents.
Treating Discomfort Without Mistaking It for Fever Symptoms
Parents want quick relief for their babies’ pain but must avoid mistaking normal teething signs for serious illness symptoms needing urgent care.
Here are safe ways to ease teething discomfort:
- Cold Compresses: Chilled (not frozen) teething rings reduce gum inflammation.
- Gentle Gum Massage: Clean fingers softly rubbing gums can soothe pain.
- Avoid Harmful Remedies: Do not use unapproved gels containing benzocaine or homeopathic products lacking proven safety.
- Pain Relievers: Use infant acetaminophen only if recommended by a pediatrician for moderate pain.
Avoid attributing all fussiness or slight warmth solely to teething without checking for other signs like persistent crying beyond typical patterns or changes in eating habits.
The Critical Question: Do Infants Get Fevers When Teething?
The clear answer is nuanced but straightforward: infants may experience slight temperature increases during teething due to localized inflammation but do not develop true fevers caused by tooth eruption alone.
If an infant has a fever higher than 100.4°F (38°C), it’s almost always caused by an infection or illness rather than just teeth coming in. Parents should remain vigilant for accompanying symptoms such as lethargy, poor appetite, rash, vomiting, or diarrhea that suggest something beyond normal teething discomfort.
Healthcare providers advise observing the overall clinical picture rather than relying solely on temperature readings when assessing an infant’s health during this stage.
Key Takeaways: Do Infants Get Fevers When Teething?
➤ Teething may cause slight temperature rises, not true fevers.
➤ High fever usually indicates infection, not teething.
➤ Drooling and irritability are common teething symptoms.
➤ Monitor your baby’s temperature carefully during teething.
➤ Consult a pediatrician if fever exceeds 100.4°F (38°C).
Frequently Asked Questions
Do infants get fevers when teething?
Infants may experience a mild temperature rise during teething due to localized gum inflammation. However, true fevers above 100.4°F (38°C) are uncommon and usually indicate illness rather than tooth eruption.
Why do infants sometimes seem feverish when teething?
The irritation and swelling of gums can trigger the immune system, causing a slight increase in body temperature. Increased drooling and mouthing objects also raise infection risks, which may cause actual fevers separate from teething.
How can parents tell if an infant’s fever is from teething?
A mild temperature up to 100.4°F (38°C) may be related to teething, but higher fevers typically signal infection. Using a reliable thermometer and monitoring other symptoms helps distinguish between normal teething and illness.
When should parents be concerned about fevers during teething?
If an infant’s temperature exceeds 100.4°F (38°C) or is accompanied by unusual symptoms like lethargy or persistent crying, parents should consult a healthcare provider. High fevers are rarely caused solely by teething.
Can teething cause other symptoms along with fever in infants?
Teething often causes drooling, gum swelling, irritability, and chewing on objects. While these can coincide with a slight temperature rise, significant fever or other symptoms usually indicate an infection rather than just teething.
Conclusion – Do Infants Get Fevers When Teething?
In summary, mild warmth or slight rises in temperature can accompany the natural inflammation caused by teeth breaking through gums. However, significant fevers—those above 100.4°F—are almost never caused by teething itself.
Parents should carefully monitor their infants using accurate thermometers and observe all symptoms closely. If a high fever appears alongside other signs of illness like persistent crying or feeding difficulties, prompt medical evaluation is essential.
Understanding these facts helps caregivers provide appropriate comfort measures while ensuring serious health issues aren’t overlooked during this critical developmental time. The key takeaway: slight warmth may be normal with teething; high fever isn’t—and always warrants professional attention.