Sores around mouth
Sores around the mouth may be cold sores, canker sores, irritation, or infection, and their location and appearance guide the next step.
The short answer
Sores can occur on the lip border, skin around the lips, or inside the cheeks and gums. A grouped blister on the lip border differs from a shallow ulcer inside the mouth, and each has different causes and treatment.
What might be causing sores around your mouth?
Common contributors include viral lesions, accidental biting, friction, burns, irritants, dry cracked skin, and inflammatory or immune conditions. A dentist or doctor checks duration, recurrence, distribution, crusting, and nearby lymph nodes.
What can you do for sores around your mouth now?
Keep the area clean, avoid picking it, use bland foods, and stop products that sting. Do not share lip products or utensils when a contagious lesion is possible, and protect cracked skin from saliva.
When do sores around your mouth need dental care?
Arrange care if a sore lasts beyond its expected healing period, repeatedly returns, spreads, or is accompanied by fever, eye symptoms, weight loss, or a weakened immune system. Seek urgent help for facial swelling or breathing difficulty.
What should you ask about a sore around your mouth?
Ask whether the sore is inside the mouth or on the skin, whether its appearance suggests a virus or trauma, and whether a swab, medicine, or biopsy is needed.
Frequently asked questions
What is the main thing to watch for?
Arrange care if a sore lasts beyond its expected healing period, repeatedly returns, spreads, or is accompanied by fever, eye symptoms, weight loss, or a weakened immune system. Seek urgent help for facial swelling or breathing difficulty.
Can home care replace an examination?
Home care can reduce irritation or discomfort, but it cannot identify or repair every dental cause.
Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.