The diagnosis and management of lichen planus, with a focus on cutaneous lichen planus, will be reviewed here. Oral lichen planus, vulvar lichen planus, lichen planopilaris, nail lichen planus, and lichenoid drug eruption (drug-induced lichen planus) are discussed in greater detail separately. (See "Oral lichen planus: Pathogenesis, clinical features, and diagnosis" and "Oral lichen planus: Management and prognosis" and "Lichen planopilaris" and "Vulvar lichen planus" and "Overview of nail disorders", section on 'Lichen planus' and "Lichenoid drug eruption (drug-induced lichen planus)" .)
In 1875, Weir reported what was possible vulvar or oral LS as "ichthyosis". In 1885, Breisky described kraurosis vulvae. In 1887, Hallopeau describes series of extragenital LS. In 1892, Darier formally describes classic histopathology of LS. From 1900 to present, the concept starts being formed that scleroderma and LS are closely related. In 1901, Pediatric LS was described. From 1913 to present, the concept that scleroderma is not closely related to LS also starts being formed. In 1920, Taussig establishes vulvectomy as treatment of choice for kraurosis vulvae, a premalignant condition. In 1927, Kyrle defines LS ("white spot disease") as entity sui generis. In 1928, Stühmer describes balanitis xerotica obliterans as postcircumcision phenomenon. In 1936, Retinoids (vitamin A) used in LS. In 1945, Testosterone used in genital LS. In 1961, the use of corticosteroids started. In Jeffcoate presents argument against vulvectomy for simple LS. In 1971, Progesterone used in LS, Wallace defines clinical factors and epidemiology of LS for all later reports. In 1976, Friedrich defines LS as a dystrophic, not atrophic condition; "et atrophicus" dropped. International Society for Study of Vulvar Disease classification system. "Kraurosis" and "leukoplakia" no longer to be used. In 1980, Fluourinated and superpotent steroids used in LS. In 1981, studies into HLA serotypes and LS. In 1984, Etretinate and acetretin used in LS. In 1987, LS linked with Borrelia infection.