Inside bottom lip sore
A sore on the inner lower lip is often caused by minor trauma or an aphthous ulcer, but persistent or unusual sores need examination.
The short answer
A sore on the inner lower lip is often caused by a bite, sharp tooth, hot food, friction, or an aphthous ulcer. Most improve with gentle care, but a sore that persists, enlarges, hardens, or repeatedly returns needs examination.
What is the direct answer?
What does this question mean?
Rinse gently with water, choose soft foods, avoid spicy or acidic items, and check for a sharp tooth or broken filling. Do not pull, scrape, or burn the lesion.
What can you do next?
Seek care if it lasts beyond two weeks, bleeds without injury, becomes firm, or is accompanied by neck swelling, fever, or trouble swallowing.
When should you seek dental care?
Ask what type of lesion is present, whether a tooth or appliance is rubbing it, and whether examination or a sample is needed.
Frequently asked questions
What is the main cause?
Aphthous ulcers are shallow painful lesions on movable mucosa, while trauma produces a sore beside an irritant.
What should happen next?
Ask what type of lesion is present, whether a tooth or appliance is rubbing it, and whether examination or a sample is needed.