Question and answer
Fluid filled blister on lip
A clear lip blister is often a mucocele, a mucus-filled cyst from a blocked minor salivary gland.
The short answer
A mucocele is usually soft and follows lip trauma, while cold sores often tingle and form grouped blisters.
What is the direct answer?
What does this question mean?
Do not pop it. Avoid biting the area, keep it clean, and record changes in size or recurrence.
What can you do next?
Arrange assessment if it lasts two weeks, returns, becomes hard, bleeds, or causes fever or swallowing difficulty.
When should you seek dental care?
Ask whether it is a mucocele, infection, irritation, or another lesion, and whether removal or testing is needed.
Frequently asked questions
What is the main concern?
A mucocele is usually soft and follows lip trauma, while cold sores often tingle and form grouped blisters.
Can home care replace an examination?
Do not pop it. Avoid biting the area, keep it clean, and record changes in size or recurrence.