<unk>  is a condition of the mouth that involves the formation of white leathery spots on the mucous membranes of the tongue and inside of the mouth. It is not a specific disease entity and is diagnosed by exclusion of diseases that may cause similar white lesions like candidiasis or lichen planus.
Leukoplakia
Papulosquamous lesions
Janeway lesions
Enoplia
Mammary souffle
Papilloma
Linitis plastica
Formothion