Your 15-year-old cousin asks to borrow a longsleeved shirt while at your house. He is embarrassed by “his rash,” and would like to hide it. He shows you several sharply delineated dry, scaly,...

Your 15-year-old cousin asks to borrow a longsleeved shirt while at your house. He is embarrassed by “his rash,” and would like to hide it. He shows you several sharply delineated dry, scaly, salmoncolored plaques on his elbows. You recognize the lesions present there and on his lower back and tell him that there are several treatments available, including tar compounds or steroids. What skin disorder do you believe he has?

 A. Psoriasis

 B. Seborrheic dermatitis

 C. Lichen planus

 D. Atopic eczema