Does Teething Cause Fever in Babies? What IAP & WHO Actually Say (2026)

Every Indian parent has heard it: "Baby's teeth are coming, that's why she has fever." Your mother-in-law says it. Your neighbour insists on it. Even some well-meaning relatives swear they've seen it happen. But what does the actual medical evidence say?

I spent weeks confused by this when my daughter started drooling at 4 months—her temperature spiked to 38.5°C, and everyone blamed the teeth that wouldn't appear for another two months. It wasn't until I spoke to our paediatrician that the picture became clear. Teething and fever are not the same thing, and confusion between the two can delay treatment for real illness.

Let me walk you through what the research actually shows, what IAP (Indian Academy of Pediatrics) recommends, and how to tell the difference.

What the Evidence Actually Shows

Teething is the natural process of baby teeth erupting through the gums, typically beginning between 4 and 7 months of age, though the timing varies widely. When we talk about teething causing fever, we're separating two separate events: the physical eruption of teeth, and an elevated body temperature (38°C or higher).

According to IAP guidelines on infant developmental milestones and common symptoms, teething may cause mild swelling and inflammation of the gums. This local inflammation can theoretically cause a tiny rise in core body temperature—but only by about 0.3°C, which is not clinically significant. To put this in perspective, your baby's normal body temperature ranges from 36.5°C to 37.5°C throughout the day. A 0.3°C rise is within normal daily fluctuation.

WHO (World Health Organization) acknowledges teething as a developmental milestone but does not classify it as a cause of fever in its clinical guidelines. WHO's position is that fever in infants and young children warrants investigation for underlying infection—not assumption that teeth are responsible.

This matters because the moment you assume fever is "just teething," you stop looking for what's actually making your baby unwell. And that delay can be costly.

Correlation vs Causation: Why Everyone Blames Teething

Here's why the myth persists so strongly: teething and common baby illnesses happen in overlapping age ranges. A baby starts teething around 4–7 months. That same window is when babies encounter their first ear infections, viral fevers, and cold viruses—especially if they're in daycare or have older siblings.

When a fever coincides with visible gum swelling or drooling, parents naturally connect the dots. "The teeth came the same week she had fever, so it must be the teeth." But post-hoc reasoning isn't cause. Most of the time, if your baby has true fever (38°C+) during teething, something else is driving it.

The most common culprits IAP recommends checking for are:

• Middle ear infection (otitis media): Extremely common in babies 6–12 months. Symptoms: fever, pulling at ears, irritability, poor feeding. Requires antibiotics from a doctor.
• Viral upper respiratory infection (common cold): Fever, nasal congestion, cough, mild lethargy. Often self-limiting but needs monitoring.
• Urinary tract infection: Less obvious; high fever without other symptoms. More common in baby girls. Needs urine culture and antibiotics.
• Viral gastroenteritis: Fever, loose stools, vomiting. Dehydration is the main risk.

How to Tell Real Illness From Teething

The real test isn't the fever itself—it's what else you see with it.

Teething alone typically shows: Swollen, tender gums. Drooling. Biting or chewing objects. Baby wants to chew your finger. Mild redness of gums. Irritability focused on the mouth. No fever above 37.8°C (or at most, barely above). Baby otherwise playing, eating, acting normal.

Real illness shows: Fever 38°C or higher that doesn't come down with paracetamol or ibuprofen. Pulling at ears, crying when lying flat, or crying when chewing. Reduced feeding or refusal to feed. Lethargy or unusual sleepiness. Rash. Difficulty breathing. Vomiting or loose stools. Swollen lymph nodes in the neck.

If your teething baby has any of these signs alongside fever, it's not teething—it's something that needs a doctor's attention.

Safe Teething Relief Options

While you're working out whether fever is real, you can safely soothe teething discomfort with age-appropriate options.

Silicone teethers (₹150–400) are the safest choice according to BIS (Bureau of Indian Standards) safety specifications for baby products. Look for teethers that are:

• BPA-free silicone (most modern brands now disclose this on the label).
• Soft, flexible, with no small parts that can detach.
• Refrigerated (not frozen—direct ice can damage gums) for soothing relief.
• Easy to clean in warm water.

Chicco Soft Silicone Teether and Mee Mee Silicone Teether are widely available on Amazon.in in the ₹200–350 range and carry good ratings from Indian parents. Both brands clearly list silicone composition and BPA-free status on their product pages.

Avoid traditional remedies that Indian grandmothers often suggest:

• Numbing gels with benzocaine: IAP advises against benzocaine-based teething gels in babies under 2 years due to methaemoglobin risk.
• Honey-based pastes: Honey carries botulism risk in babies under 1 year.
• Clove oil or mustard oil on gums: Can burn delicate gum tissue. Not recommended by IAP.
• Metal or amber teethers: No evidence they work; risk of ingestion if they break.

When to See a Doctor

Take your baby to a paediatrician if:

• Temperature is 38°C or higher and persists beyond a few hours or recurs frequently.
• Fever comes with any sign of ear infection (pulling ears, crying when lying down, high-pitched cry).
• Baby refuses to feed, has reduced wet nappies, or shows signs of dehydration.
• Fever is accompanied by rash, vomiting, or difficulty breathing.
• Baby seems unusually sleepy or unresponsive.
• You're unsure whether it's teething or something else—your doubt is reason enough to check.

This is general information, not medical advice. A doctor needs to examine your baby to rule out infection.