Teething Without Panic: Real Timeline, Real Relief, Real Red Flags

Teething is the all-purpose explanation for everything unusual a baby does between 4 months and 3 years. Fussy? Teething. Bad night? Teething. Low-grade fever? Teething. Mystery rash? Teething. In reality, the peer-reviewed research is much more specific about what teething actually causes — and the list is shorter than the internet suggests.

This matters, because “it’s just teething” has been used to rationalize missing serious illness more than once. Knowing the real picture protects both your sanity and your baby.

The actual timeline

The typical order, with plenty of individual variation:

• 6–10 months: lower central incisors (the bottom front two)
• 8–12 months: upper central incisors
• 9–13 months: upper lateral incisors (either side of the top center)
• 10–16 months: lower lateral incisors
• 13–19 months: first molars (both top and bottom — often the roughest)
• 16–23 months: canines
• 23–33 months: second molars

First teeth at 4 months or at 15 months are both within normal. The order above is typical but not universal. If your baby hits 18 months with no teeth, talk to your pediatrician, but it’s rarely a concern before that.

What teething actually causes

The two largest prospective studies on teething symptoms — Macknin et al. (2000) and the more recent multi-site pediatric study published in Pediatrics in 2016 — agree on the real teething signs:

• Increased drooling
• Chewing on fingers and objects
• Mild gum irritation, redness, or swelling at the tooth site
• Irritability in the 1–2 days immediately before a tooth emerges, often peaking the day before
• Mildly decreased appetite during the same window
• Slight elevation in body temperature — typically less than 100.4°F (38°C)

That’s the list. High fever, diarrhea, rashes on the body, runny nose with green mucus, ear pain — these are not caused by teething. They’re caused by the viruses teething babies happen to catch because they’re 7 months old and putting everything in their mouths. Don’t let teething mask a real infection.

What actually helps

Safe options

• A cold (not frozen solid) silicone or rubber teether
• A clean, cold washcloth to gnaw on
• Gentle gum massage with a clean finger
• Cold purees, cold soft fruit (for babies on solids), or a mesh feeder with frozen breastmilk
• Age-appropriate doses of infant acetaminophen or, for babies 6+ months, ibuprofen — per your pediatrician’s guidance, for a genuinely miserable baby

Don’t use

• Amber teething necklaces. The FDA and AAP explicitly warn against them — strangulation and choking risk, and no evidence of benefit.
• Benzocaine gels (Orajel and similar). The FDA warned against use in children under 2 in 2018 because of methemoglobinemia risk.
• Homeopathic teething tablets or gels with belladonna. Multiple recalls; the FDA has linked some products to seizures.
• Frozen-solid teethers. The surface is too hard — can bruise gums or crack a new tooth.

The red flags

Call your pediatrician if your “teething” baby has:

• A fever of 100.4°F or higher, especially if under 3 months old — this is not teething
• Fever persisting more than 48 hours
• Persistent diarrhea or vomiting
• A new rash beyond the cheeks or chin
• Ear pulling combined with night waking and fever — likely an ear infection, not teething
• A baby who seems significantly more lethargic or out of character than “cranky”

Logging symptoms alongside suspected tooth eruptions builds a useful picture over months. If every “teething fever” in your log is actually 101.5°F and lasting 3 days, you have data that says “call the pediatrician” — not “wait this out.” ParentPod’s health log captures both temperature and notes in one entry, and a quick look at the history often resolves the “is this teething or not?” question instantly.