K13: Other diseases of lip and oral mucosa

K13.2: Leukoplakia and other disturbances of oral epithelium, including tongue

The mucous membrane is a moist skin. The whole of the oral cavity is lined with mucous membrane.

Changes in the mucous membrane can appear as patches or stripes. The patches or stripes may be reddish or whitish.

It is not always possible to find a cause for changes to the mucous membrane. Possible causes include smoking and drinking alcohol, for example. One can also get changes to the mucous membrane if one does not take good enough care of one's teeth. If the mucous membrane is irritated, over a long period of time, by pressure or rubbing, changes can also occur. These changes can occur in the gum, tongue or other places in the oral cavity.