A pruritic rash in the interscapular area

The patient is a 38-year-old Hispanic woman who presents with a 1-year history of a very pruritic rash over her interscapular area. On examination, she has a circular area of slightly hyperpigmented macules in the interscapular region. The patient complains of pruritus but no pain in the area of the rash. The patient has no other medical problems and has ...