43.有關乾癬（psoriasis）病人的指甲病變之敘述，下列何者錯誤？ (A)nail pitting, oil spots, onycholysis, subungual hyperkeratosis都是乾癬常見的指甲病變，其中以nail pitting最常見 (B)nail pitting是影響 nail matrix 角化異常所致 (C)nail pitting與發生乾癬性關節病變有強烈相關性 (D)oil spots是具高度專一性的乾癬指甲病變 (E)一律送分