Derm Dx: Skin Rash on the Abdomen, Flank, and Upper Thigh

A 37-year-old man presents with a skin rash affecting his abdomen, flank, and upper thigh that has been present for 5 years. The eruption itches on occasion but is otherwise asymptomatic. He denies family or personal history of psoriasis and eczema. Prior therapies to treat the rash included triamcinolone, miconazole and oral terbinafine. Examination reveals scattered, well-demarcated patches.

Can you diagnose ...