Cicatrising alopecia with perifollicular blue–gray patches is most commonly associated with –
Pitting of nails
Whitish lesions in the buccal mucosa
Arthritis
Discoid plaques in the face
Cicatricial alopecia with perifollicular blue-grey patches indicates in favour of lichen planus.
Whitish lesion in buccal mucosa (Lacey pathern) is characteristic of lichen planus