16 MEDICAL BOOKS ONLINE! Review excerpts from medical books online, free, without registration, for more information about the prevalence and/or incidence of Lichen planus.
The cause of lichen planus is unknown. Eruptions similar to lichen planus have been induced by arsenic, bismuth, gold, quinidine, propranolol, and naproxen. Exposure to developers used in color photography may likewise cause an eruption that’s indistinguishable from lichen planus.
Lichen planus is found in all geographic areas, with equal distribution among races. Eruptions of lesions with features characteristic of lichen planus occur most often in middle-age people and are uncommon in young and elderly people.
Source: Professional Guide to Diseases (Eighth Edition), 2005
The term 'prevalence' of Lichen planus usually refers to the estimated population of people who are managing Lichen planus at any given time. The term 'incidence' of Lichen planus refers to the annual diagnosis rate, or the number of new cases of Lichen planus diagnosed each year. Hence, these two statistics types can differ: a short-lived disease like flu can have high annual incidence but low prevalence, but a life-long disease like diabetes has a low annual incidence but high prevalence. For more information see about prevalence and incidence statistics.
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