Tags: Disease.
Lichen planus (LP) is a disease of the skin and/or mucous membranes that resembles lichen. The cause is unknown but it is thought to be the result of an autoimmune process with an unknown initial trigger. There is no cure but many different medications and procedures have been used to control the symptoms.The term lichenoid reaction (or lichenoid lesion) refers to a lesion of similar or identical histopathologic and clinical appearance to lichen planus (i.e.
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