"Leukoplakia is adherent white plaques or patches on the mucous membranes of the oral cavity, including the tongue. The clinical appearance is highly variable. Leukoplakia is not a specific disease entity, but is diagnosis of exclusion.  It must be distinguished from diseases that may cause similar white lesions, such as candidiasis or lichen planus.
It is sometimes described as precancerous. 
The term "candidal leukoplakia" is sometimes used to describe certain types of oral candidosis."
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11/06/2009: Magenesta from Kingscliff, Nsw, Australia: "hi, i have a problem with leukoplakia, a white raspy covering on the bottom of my tongue. it can be sore. there is also some inflammation, further making swallowing more difficult. my mouth sometimes bleeds when brushing teeth. treating it for fungus c nilstat at the moment). ive had it for a few years and it getting worse. have you any ideas? its been mentioned that methylcobalamine or turmeric may be helpful. i have visited different practitioners with no positive results. i am a vegetarian with no eggs. i dont drink or use drugs.
any help would be appreciated.
11/07/2009: Alice from Shingle Springs, Ca, U.S.A. replies: "Hello! I know that black pepper, garlic oil and cinnamon are anti-fungal since I used that mix for peach leaf curl on my trees. Maybe gargling and swallowing a tea of these would help. My sore mouth was relieved by safflower blossom tea, but you could also add nettle and turmeric/black pepper and/or ginger as they are good for inflammatory conditions."