The most common symptom of mouth cancer is an ulcer or sore that does not heal in 3 weeks.

The most common symptom of mouth cancer is an ulcer or sore that does not heal in 3 weeks. This may be in the mouth or on the lip.

Other symptoms may include:

  • white patches (leukoplakia) or red patches (erythroplakia) that do not go away
  • a lump or thickening in the mouth or on the lip
  • difficulty or pain with chewing, swallowing or speaking
  • bleeding or numbness in the mouth
  • bad breath (halitosis)
  • loose teeth or dentures that do not fit well anymore
  • a lump in the neck
  • losing a lot of weight over a short period of time.

These symptoms can be caused by other conditions. But it is important to have them checked by your doctor or dentist.

Mouth cancer can be treated more successfully when it is diagnosed early.