Oral lichen planus--a demographic study.
Among 20,333 Swedish people aged 15 yr and above, oral lichen planus was found in 1.9%; 1.6% among men and 2.2% among women. The highest prevalences were found in the age groups 65-74 and 55-64 yr. Reticular lichen planus was the most common type, found in 77.3%. The most prevalent intraoral location of lichen planus was the buccal mucosa, which was affected in 92%. Lichen planus was less prevalent among smokers than among non-smokers, except for the plaque type, which showed no difference in this context.
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D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008010:Lichen Planus / Q000145:classification / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D009059:Mouth Diseases / Q000145:classification / Q000453:epidemiology*; D012907:Smoking; D013548:Sweden