Conditions · FAQ
When do mouth sores need urgent or in-person care?
Short answer
Mouth sores need prompt care if you cannot drink, have fever, or have a weakened immune system. Trouble breathing or swallowing saliva needs emergency care. Arrange an in-person exam for a sore lasting more than two weeks, unexplained bleeding, a lump, or sores that keep returning.
Most minor mouth sores are not emergencies, but some symptoms should not wait. Call 911 or seek emergency care for trouble breathing, rapidly growing mouth or throat swelling, or inability to swallow saliva. Severe weakness, confusion, or fainting along with poor fluid intake may also signal a serious problem.
Get prompt medical advice if pain prevents drinking, you urinate much less than usual, or you have fever or spreading swelling. If you are receiving chemotherapy or have a weakened immune system, contact your care team early. Follow any urgent-care instructions they have already given you.
A sore that lasts more than two weeks needs an in-person medical or dental exam. The same is true for a firm area, unexplained bleeding, a neck lump, or a persistent red or white patch. These findings do not always mean cancer, but they should be checked. Do not keep masking ongoing symptoms with a numbing rinse instead of getting an exam.
Sources
Written by the Verra clinical team · Medical review pending
General information, not medical advice. If you're in crisis, call or text 988.