The lesions of lichen planus can occur anywhere on the body but ... the fingernails (producing a fingernail dystrophy) and scalp (producing a scarring alopecia). In the rare and atypical atrophic ...

Lichen planopilaris, also called lichen ruber follicularis, evokes perifollicular erythema and sometimes hyperkeratotic follicular papules. A violaceous discoloration of the scalp may be observed.