Test your diagnostic skills in our regular dermatology quiz. What are these itchy lesions, which first began to appear on a patient’s back and hands?
A 48-year-old woman presents with a two-month history of intensely itchy papules on her back and hands. More recently, the lesions have begun to appear on her lower limbs and feet (Figure), occurring over bony prominences and after minor trauma. The lesions are hyperpigmented, violaceous, polygonal papules with a flat top.