What’s causing this teen’s itchy rash on his back? Take the Quiz!

An 18-year-old man visited his doctor about a slightly pruritic rash that developed on his trunk 2 weeks prior. On examination, numerous oval, pink and violaceous, fine, scaly papules and plaques on the back were seen, that extended to the proximal arms and thighs. He was not on any medications and had no recent history of trauma or infection. He was otherwise well and had no systemic symptoms. What’s the diagnosis?

A)     Ashy dermatosis

B)     Guttate psoriasis

(C)    Nummular dermatitis

(D)    Pityriasis rosea

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