Cicatrising alopecia with perifollicular blue–gray patches is most commonly associated with –
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
Pitting of nails
Whitish lesions in the buccal mucosa
Arthritis
Discoid plaques in the face