A 30 year old male came with pruritic papule over flexor aspect of right forearm which is purple in colour.There is also pterygium of nails. Diagnosis?: (A) Alopecia areata, (B) Psoriasis, (C) Lichen planus, (D) Pityriasis rosea
Answer is C. Purple,pruritic lesion over flexor aspect & pterygium of nail is suggestive of Lichen planus.