Red areas inside the mouth can develop for many reasons, including irritation and inflammation.
However, a persistent, unexplained red patch—sometimes called erythroplakia when it meets specific clinical criteria—can have a higher likelihood of containing abnormal cells than many other oral lesions.
A dentist or oral-health professional may need to examine the area closely and determine whether further testing is necessary.
The key point is simple:
Don't diagnose a persistent red patch yourself based on an internet photograph.
6. Persistent Mouth Pain
Occasional mouth pain can come from something as simple as biting your cheek, burning your mouth with hot food, or having a dental cavity.
But unexplained pain that persists should be investigated.
Particularly concerning symptoms can include pain that:
- Doesn't improve
- Keeps returning
- Makes eating difficult
- Is associated with a lump
- Occurs with unexplained bleeding
- Is accompanied by numbness
Persistent pain doesn't automatically mean cancer. Infections, dental problems, nerve conditions, and other disorders can produce similar symptoms.
7. Difficulty Swallowing or Speaking
Changes in swallowing or speech can have many causes.
A throat infection, dental problem, neurological condition, inflammation, or structural abnormality may affect these functions.
However, persistent difficulty swallowing, a sensation that food is getting stuck, or unexplained changes in speech should be evaluated by a healthcare professional.
This becomes particularly important when these symptoms occur alongside an unexplained mouth or throat lesion.
8. A Lump in the Neck or Jaw
Oral health problems don't always remain confined to the mouth.