What is teething?

Written by Yuppo Lab Experts.

Updated 27 October 2026

Teething is the process of baby teeth breaking through the gums. According to the NHS, most babies start teething at around 6 months, although some start before 4 months or after 12 months, and most children have all their baby teeth by 2 to 3 years.

Key takeaways

  • Common signs include sore, red gums, drooling, chewing, a flushed cheek, ear rubbing and fussiness.
  • Teething can cause a slightly raised temperature, but not a fever of 38°C or more.
  • Some babies have little or no discomfort.

What you can do

  • Offer a clean, chilled (not frozen) teething ring.
  • Rub the gums gently with a clean finger.
  • Start brushing as soon as the first tooth appears, with a smear of fluoride toothpaste.
  • Avoid amber teething necklaces, which carry a choking and strangulation risk.

When to talk to your doctor

See your doctor if your baby has a temperature of 38°C or more, diarrhoea or seems unwell, rather than assuming it is teething. Ask a pharmacist before using teething gels.

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