Lacy White lesions in the mouth with pterygium is seen in:: (A) Psoriasis, (B) P. Alba, (C) Lichen planus, (D) Leprosy
Answer is C. Purple polygonal papules marked by severe pruritus; lacy white markings called as Wickam's Striae, especially associated with mucous membrane lesions & pterygium are diagnostic of Lichen planus.