Pink patches on the hip and buttock

A 43-year-old elementary school teacher presents with a rash that began on his left thigh approximately 4 months earlier; the rash has since spread. It is mildly itchy but has no associated pain or bleeding. His past medical history is significant for allergic rhinitis and atopic dermatitis. Suspecting eczema, he has been applying an over-the-counter hydrocortisone 1% cream as well ...