The Case A 41-year-old woman was referred to the dermatology clinic for a three-month history of tender lesions on her elbows and around the joints of her hands. Her medical history was notable for seropositive, non-erosive rheumatoid arthritis (RA), which was being treated with 5 mg predÂnisone daily, 10 mg methotrexate weekly by mouth, 200…