oral (erosive) lichen planus

or·al (e·ro·sive) li·chen pla·nus

oral manifestations of lichen planus characterized by white striae (Wickham striae) of the oral mucous membrane and sometimes associated with ulceration; patients may or may not exhibit a history of cutaneous lichen planus.

or·al (e·ro·sive) li·chen pla·nus

(ōrăl ē-rōsiv līkĕn plānŭs)
Manifestations of lichen planus characterized orally by white striae of oral mucous membrane and sometimes associated with ulceration; patients may not exhibit a history of cutaneous lichen planus.