markings or striae was described by weyl in 1885. in 1895, wickham further explained the characteristic of the lesion, now known as wickham striae. further on, darier explained the presence of such characteristic markings by correlating with an increase thickness of the granular cell layer. the coexistence of oral, cervical and stomach lichen planus lesions were described by guogerot and burnier in 1937. a similar variant of mucosal lichen planus as the vulvovaginal-gingival syndrome with erosive lesions involving oral and vulvovaginal mucosa were introduced by pelisse and colleagues in year 1982. research apremilast is undergoing investigation as a potential treatment. notes cutaneous lichen planus affecting the extremities is also known as "lichen planus actinicus," "actinic lichen niditus," "lichen planus atrophicus annularis," "lichen planus subtropicus," "lichen planus tropicus," "lichenoid melanodermatitis," and "summertime actinic lichenoid eruption"