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Symptoms - Gum disease (gingivitis and periodontitis)

Healthy gums should be pink, firm and keep your teeth securely in place. Your gums should not bleed when you touch or brush them.

Gum disease is not always painful and you may not be aware you have it.

It's important to have regular dental check-ups.

Early symptoms - gingivitis

The initial symptoms of gum disease can include:

  • red and swollen gums
  • bleeding gums after brushing or flossing your teeth

This stage of gum disease is called gingivitis. It improves with better brushing.

Advanced symptoms - periodontitis

If gingivitis is not treated, the tissues and bone that support the teeth can also become affected. This is known as periodontitis or periodontal disease.

Symptoms of periodontitis can include:

  • bad breath (halitosis)
  • an unpleasant taste in your mouth
  • loose teeth that can make eating difficult
  • gum abscesses - these are collections of pus that develop under your gums or teeth

Necrotising periodontal disease (NPD)

In rare cases, a condition called necrotising periodontal disease (NPD) develops suddenly. NPD used to be called acute necrotising ulcerative gingivitis (ANUG).

The symptoms of NPD are usually more severe than those of gum disease and can include:

  • bleeding, painful gums
  • painful ulcers
  • receding gums in between your teeth
  • bad breath
  • a metallic taste in your mouth
  • excess saliva in your mouth
  • difficulty swallowing or talking
  • a high temperature (fever)

When to see a dentist

You should make an appointment to see your dentist if you think you may have gum disease.


Content supplied by the NHS and adapted for Ireland by the HSE

Page last reviewed: 31 October 2024
Next review due: 31 October 2027

This project has received funding from the Government of Ireland’s Sláintecare Integration Fund 2019 under Grant Agreement Number 123.