lichen sclerosus et atrophicus A chronic atrophic skin disorder marked by the appearance of discrete, flat-topped, white papules, which may coalesce and degenerate. The skin affected by the rash, which occurs most often on the vulva, is often thin, shiny, and scarred.
Medical definition of lichen sclerosus et atrophicus: a chronic skin disease that is characterized by the eruption of flat white hardened papules with central hair follicles often having black keratotic plugs.
Lichen sclerosus et atrophicus definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up now! DICTIONARY.COM, Lichen Sclerosus et Atrophicus. A chronic inflammatory mucocutaneous disease usually affecting the female genitalia (VULVAR LICHEN SCLEROSUS) and BALANITIS XEROTICA OBLITERANS in males. It is also called white spot disease and Csillag’s disease.
1. A composite organism made up of a fungus, usually an ascomycete, that grows symbiotically with an alga or a cyanobacterium and characteristically forms a crustlike or branching growth on rock s or tree trunks. 2. Medicine Any of various skin diseases.
Lichen Sclerosus et Atrophicus definition A chronic, atrophic lymphocyte-mediated inflammatory dermatosis characterized by shiny, white atrophic patches.
Lichen sclerosus (LS) is also known as lichen sclerosus et atrophicus (LSA), balanitis xerotica obliterans in males, Csillag’s disease, lichen albus, hypoplastic dystrophy, white spot disease, and kraurosis vulvae. LS most commonly affects anogenital region with 85%–98% cases while extragenital LS can be seen in 15%–20% cases.
Lichen sclerosus (balanitis xerotica obliterans) is an atrophic disorder of unknown origin that is homologous to vulvar lichen sclerosus et atrophicus . Grossly, it is usually localized to the prepuce and glans, especially around the meatus, and is characterized by white papules or plaques.
In lichen sclerosus et atrophicus there is atrophy plus follicular hyperkeratosis. The puck¬ ering by the atrophy produces minute dells at the sites of the follicles which are defined by the remnants of keratin. The Koebner phenomenon has only occa¬ sionally been described in association with lichen sclerosus et atrophicus , but we have observed it in one of our patients, reported herein.
