This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Skin
Cicatrising alopecia with perifollicular blue-gray patches is most commonly associated with: 
Select and explain. 
A. Pitting of nails, B. Whitish lesions in the buccal mucosa, C. Ahritis, D. Discoid plaques in the face
B: Whitish lesions in the buccal mucosa
Answer: B: Whitish lesions in the buccal mucosa 
Explanation: Cicatrising alopecia with perifollicular blue-gray patches is likely to be associated with whitish lesions in buccal mucosa which is characteristic of Lichen planus. Ref: Cicatricial Alopecia: An approach to diagnosis and management, By Vera Price, Paradi Mirmirani, Page 1-5.