Least common site involvement in psoriasis is:: (A) Scalp involvement, (B) Nail involvement, (C) CNS involvement, (D) Arthritis
Answer is C. Ans. c. CNS involvementScalp is a common site of involvement in psoriasis. Corona psoriatica is a band of psoriasis, projecting beyond hairline on forehead.Nail changes in psoriasis are pitting, onycholysis, subungual hyperkeratosis, splinter hemorrhages, uneven surface.