The linea alba ("white line") is a defined, linear area of hyperkeratosis and leukoedema that is caused by chronic very mild topical frictional injury and is located where the upper and lower teeth meet, on the buccal mucosa. Therefore, it is only seen where teeth are present.
It is present to a greater or lesser extent in every one but is more prominent in some persons.
Patients are generally unaware of its presence.
It may be accentuated in patients who have a chronic cheek biting habit. Extent of involvement is what divides a very prominent linea alba from chronic bite injury.
It is considered normal anatomy of the buccal mucosa and is present for years usually without progression.
Linea alba - Oral Mucosal Lesion
Synopsis
Codes
ICD10CM:
L81.8 – Other specified disorders of pigmentation
SNOMEDCT:
280591001 – Linea alba
L81.8 – Other specified disorders of pigmentation
SNOMEDCT:
280591001 – Linea alba
Look For
Subscription Required
Diagnostic Pearls
Subscription Required
Differential Diagnosis & Pitfalls
To perform a comparison, select diagnoses from the classic differential
Subscription Required
Best Tests
Subscription Required
Management Pearls
Subscription Required
Therapy
Subscription Required
References
Subscription Required
Last Updated:01/03/2017
Patient Information for Linea alba - Oral Mucosal Lesion
Premium Feature
VisualDx Patient Handouts
Available in the Elite package
- Improve treatment compliance
- Reduce after-hours questions
- Increase patient engagement and satisfaction
- Written in clear, easy-to-understand language. No confusing jargon.
- Available in English and Spanish
- Print out or email directly to your patient
Upgrade Today
Linea alba - Oral Mucosal Lesion
