Teething pain shows up as a cluster of behavioral and physical changes that typically start about four days before a tooth breaks through the gum and last about three days after. Each episode runs roughly 3 to 8 days total, so knowing what to look for during that window helps you distinguish normal teething discomfort from something that needs medical attention.
What Teething Pain Looks Like
A large prospective study that tracked over 19,000 child-days and 475 individual tooth eruptions found that the following symptoms were statistically linked to teething: increased biting, drooling, gum rubbing, sucking, irritability, wakefulness, ear rubbing, facial rash, decreased appetite for solid foods, and a slight rise in body temperature. That’s a long list, but here’s the important nuance: no single symptom appeared in more than 35% of teething babies. Your baby might show three or four of these signs, or just one or two. There’s no universal teething picture.
The most telling physical sign is what’s happening inside your baby’s mouth. Swollen, puffy gums where a tooth is pushing through are the clearest indicator. You may be able to feel a hard ridge or see a whitish bump just below the gum surface. The surrounding tissue often looks red or slightly inflamed.
Behavioral Clues That Signal Discomfort
Babies can’t point to their gums and tell you it hurts, so they communicate pain through behavior. The biggest giveaway is a sudden increase in chewing and biting. If your baby is gnawing on fingers, toys, the edge of their crib, or your shoulder with unusual intensity, they’re likely trying to create counter-pressure against the gum where a tooth is pushing through.
Irritability is common but vague on its own. What makes it more useful as a teething clue is timing: fussiness that ramps up over a few days, then resolves once you can see or feel a new tooth. Decreased interest in solid food is another reliable signal, since pressing food against sore gums hurts. Most teething babies still accept liquids normally.
Excessive drooling is one of the more visible signs, though some babies drool heavily even when they’re not teething. If drooling spikes alongside gum rubbing or biting, teething is the likely cause.
Why Nights Are Often Worse
Many parents notice their baby seems fine during the day but becomes miserable at bedtime. This isn’t coincidence. During the day, babies are distracted by play, feeding, movement, and interaction. At night, those distractions disappear, and the discomfort becomes the main thing they’re aware of. Fatigue also lowers a baby’s ability to cope with pain, so the combination of tiredness and gum soreness can make evenings particularly rough.
If your baby is waking more frequently or struggling to fall asleep during what you suspect is a teething episode, gentle gum pressure or a cold teething cloth can help settle them back down.
Ear Pulling and Facial Rash
Babies sometimes tug at their ears during teething because gum pain can radiate into the ear area on the same side. This is typically mild, one-sided pulling that matches the side where a tooth is coming in. If the ear pulling is intense, involves both ears, or comes with fever and increased irritability, an ear infection is more likely and worth getting checked.
A rash around the mouth, chin, or neck is another common companion to teething. This is a drool rash, caused by constant moisture irritating the skin. It typically looks like red, slightly raised patches with some dryness or chapping, and sometimes small bumps. It’s not the teething itself causing the rash but the flood of saliva that comes with it. Keeping the area dry and applying a barrier cream helps. If you see honey-colored crusting or pimple-like lesions, that’s worth a call to your pediatrician since it could be a skin infection rather than simple irritation.
What Teething Does Not Cause
One of the most persistent myths is that teething causes fever. It doesn’t. Teething may raise your baby’s temperature slightly, but it won’t push it to 100.4°F (38°C) or higher, which is the medical definition of a fever. The same prospective study that confirmed teething symptoms also found that fever above 102°F, vomiting, significant diarrhea, cough, and body rashes were not associated with tooth eruption.
This distinction matters because attributing a real fever to “just teething” can delay treatment for an actual illness. If your baby’s temperature reaches 100.4°F or above, something else is going on. A temperature above 104°F needs emergency care.
When Teething Typically Starts
Most babies cut their first tooth around 6 months, though teething pain can begin as early as 4 months as teeth start moving beneath the gums before they’re visible. The lower front teeth usually arrive first, followed by the upper front teeth. From there, teeth tend to fill in from front to back, with molars arriving later and often causing more discomfort because of their larger surface area. The full set of 20 baby teeth is usually in place by age 3.
Keep in mind that every tooth can trigger its own 3-to-8-day episode of symptoms. Some teeth slide through with barely any fuss. Others, particularly the first few and the molars, tend to cause more noticeable discomfort.
Safe Ways to Relieve Teething Pain
The simplest and most effective relief is pressure and cold. A chilled (not frozen) damp washcloth gives your baby something safe to gnaw on while the cold numbs the gum slightly. Rubber or silicone teething toys work well too, especially if you refrigerate them first. For nighttime wake-ups, a gentle gum massage with a clean finger can provide enough relief to help your baby settle back to sleep. A warm bath before bed, a short massage, or low-volume white noise can also ease the general crankiness that comes with teething.
If your baby seems especially uncomfortable and non-drug approaches aren’t helping, infant acetaminophen is considered safe in moderate, occasional use. A single dose at bedtime during the worst nights of a teething episode is a common approach, but check with your pediatrician on the right dose for your baby’s weight.
Products to Avoid
The FDA has issued clear warnings against using numbing gels or liquids containing benzocaine or lidocaine for teething. Benzocaine can cause a dangerous condition that reduces the blood’s ability to carry oxygen, and lidocaine can lead to seizures, heart problems, and severe brain injury in infants if too much is swallowed. These products wash off the gums quickly with saliva, offering minimal benefit while carrying serious risk. Homeopathic teething tablets have also been flagged by the FDA as potentially harmful. Stick with physical comfort measures and, if needed, age-appropriate pain relievers.