Lichen planus with simultaneous involvement of the oral cavity and genitalia.

Five women with reticular and/or erosive lichen planus of the oral cavity associated with mucous involvement of the genitalia are reported. The presence of a typical lesion in one of these sites requires search for other common sites of involvement as well as manifestations of systemic diseases. Early management and careful follow-up of patients with chronic erosive and atrophic lesions of the vulva should be instituted to prevent dyspareunia. The use of the term plurimucosal lichen planus instead of vulvo-vagino-gingival syndrome is proposed.