Leukoplakia


Definition

Leukoplakia are patches on the tongue, in the mouth, or on the inside of the cheek that occur in response to long-term irritation. Leukoplakia patches may also develop on the outer female genitals.


Alternative Names

Hairy leukoplakia; Smoker's keratosis; Vulvar leukoplakia


Causes, incidence, and risk factors

Leukoplakia mainly affects the mucus membranes of the mouth. It is thought to be caused by irritation, but the cause is not always known.

Irritation in the mouth may be caused by:

  • Rough teeth
  • Rough places on dentures, fillings, and crowns
  • Smoking or other tobacco use (smoker's keratosis), especially pipes
  • Holding chewing tobacco or snuff in your mouth for a long period of time

The disorder is most common in elderly persons.

"Hairy" leukoplakia of the mouth is a different disorder that is seen mostly in HIV-positive people. It may be one of the first signs of HIV infection. It can also appear in other people whose immune system is not working well, such as after a bone marrow transplant. It is caused by the Epstein-Barr virus, but is not harmful by itself. The most common symptoms of hairy leukoplakia are painless, fuzzy white patches on the side of the tongue.


References

Sciubba JJ. Oral mucosal lesions. In: Cummings CW, Flint PW, Haughey BH, et al, eds. Otolaryngology: Head & Neck Surgery. 5th ed. Philadelphia, Pa: Mosby Elsevier; 2010:chap 91.


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Review Date: 7/20/2011
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; Seth Schwartz, MD, MPH, Otolaryngologist, Virginia Mason Medical Center, Seattle, Washington. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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