Erythema gyratum repens: a paraneoplastic eruption

A 77-year-old woman was evaluated for a 3-week history of rash on her lower limbs. The eruption began as a small erythematous macule, and gradually enlarged with time. The patient had atrial fibrillation on anticoagulation therapy. On physical examination, there were annular, erythematous lesions that appeared in concentric, raised bands lined by trailing edge of scales over the lateral aspect of her right thigh (figure 1 …