Lip sore that won t heal
A lip sore that does not heal needs examination to identify ongoing trauma, infection, inflammation, or a less common tissue disorder.
The short answer
A persistent lip sore should be examined because trauma, infection, inflammation, and abnormal tissue change can look similar.

What is the direct answer?
What does this question mean?
The clinician checks skin and mucosa for ulceration, crusting, firmness, colour change, bleeding, blisters, and contact with sharp teeth or appliances.
What can you do next?
Do not pick or burn it, remove obvious rubbing only with professional guidance, keep the mouth clean, and record changes.
When should you seek dental care?
Arrange prompt review when it persists, repeatedly opens, becomes firm, bleeds without provocation, or is associated with a neck lump.
What should you ask the dentist?
Ask what the location and surface suggest, whether trauma is involved, and whether testing or referral is needed.
Frequently asked questions
Can repeated lip biting cause a sore?
Yes, but a persistent lesion still needs examination after the irritant is addressed.
Should I use antiseptic?
Do not apply strong chemicals without advice; treatment depends on the cause.
