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Published on: 7/15/2026
A bump on your lip line can have several possible causes, including a mucocele (a harmless fluid-filled cyst), a common oral cyst, a fungal infection, actinic cheilitis (a sun-damage condition), or a cold sore caused by the herpes simplex virus. Each condition looks different and requires a different approach to treatment, so identifying the cause is the first step toward relief.
Because lip bumps can range from harmless to something needing medical attention, guessing isn't the best strategy. Take a free, instant, online symptom check to better understand what may be causing your bump and get clear guidance on your next steps.
Reviewed for medical accuracy: 07/14/2026
Not seeing your question? No worries.
Submit your own QuestionA bump on the lip line can have various causes, and understanding these can help determine the right approach to treatment:
If you have a bump on your lip line, you can start by using our free symptom checker to better understand what might be causing it, then consult a healthcare professional for a proper diagnosis and treatment plan.
(References)
Nallasivam KU, Sudha BR. Oral mucocele: Review of literature and a case report. J Pharm Bioallied Sci. 2015 Aug;7(Suppl 2):S731-3. doi: 10.4103/0975-7406.163516. PMID: 26538955; PMCID: PMC4606697.
Santos HB, Rolim LS, Barros CC, Cavalcante IL, Freitas RD, Souza LB. Dermoid and epidermoid cysts of the oral cavity: a 48-year retrospective study with focus on clinical and morphological features and review of main topics. Med Oral Patol Oral Cir Bucal. 2020 May 1;25(3):e364-e369. doi: 10.4317/medoral.23388. PMID: 32134895; PMCID: PMC7211364.
Rajendra Santosh AB, Muddana K, Bakki SR. Fungal Infections of Oral Cavity: Diagnosis, Management, and Association with COVID-19. SN Compr Clin Med. 2021;3(6):1373-1384. doi: 10.1007/s42399-021-00873-9. Epub 2021 Mar 27. PMID: 33817556; PMCID: PMC8003891.
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