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Does teething affect sleep?

Sophie Acott

Sophie Acott

Certified sleep consultant · Author of Sleep Play Love · 13 years

Published June 23, 2024 · Updated July 17, 2026

The short answer

Yes, teething genuinely affects sleep. An erupting tooth triggers inflammation and often symptoms like drooling, red gums, fever, and disrupted sleep, usually worse toward the end of the day and overnight. Ease it by protecting wake windows, connecting through the day, offering pain relief or teething rings on professional advice, and delaying any sleep training until your little one recovers.

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Despite many professionals claiming that teething doesn’t affect sleep patterns or behavior, I couldn’t disagree more. A tooth erupting through the surface of the gums creates a localized inflammatory response, consequently triggering an immune response. Symptoms of illness may present if bacteria enters the inflamed/open gums -  extremely common due to the fact that babies at these times chew on anything and everything they can find.

Depending on the child, their age, temperament, which teeth, and how many are coming through at a time, the pain and effect on sleep and behavior can vary in intensity, and length of time. From personal experience with my own three children, and from the accounts of hundreds of parents I have worked closely with, the physical and emotional symptoms, albeit varied, are real: fever, drooling, biting, diarrhea, vomiting, diaper rash, sleeplessness, hyperactivity, teeth grinding, irritable behavior, fatigue, fears, anxiety, croup, ear and/or throat problems, sinus congestion, a runny nose or even a cough.

As such, many sleeping difficulties and undesirable sleep habits commonly develop when a child is teething or unwell. Try not to become too disheartened if you experience that your routine, consistency, and resolve seems to go south at these times. You can help to minimize the impact of these “teething pains” on their sleep (and yours) by taking the following into consideration.

How long does teething take?

Whilst babies can grow their first tooth as early as three months, and some as late as 12 months, the average age to cut their first tooth is between six and seven months. Most children will have all of their milk (baby) teeth by two-and-a-half years. Depending on the individual, their age, which teeth and how many are coming through at a time; the pain and effect on sleep and behavior may be experienced for one day to a week (or more).

Signs and symptoms:

S

Sophie

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Before I could really answer this for you, I'd ask two things.

Tap one and I'll start your plan there. No judgment — there never is.

*Never self-diagnose. Always seek professional advice at times when you are uncertain of your child’s symptoms, or if your child requires assistance (medical and/or natural) to ease pain or speed up their recovery process. Illness symptoms and solutions can vary greatly, always seek medical advice before making any assumptions or following any recommendations above

"You are a good parent, you are doing your best, and you are enough."

— Sophie, from the book

Tonight can be night one.

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