A Young Woman Comes into the Clinic Complaining of Itchy

A young woman comes into the clinic complaining of itchy, red skin and swelling on her arms and legs. She had not been in any parks or wooded areas recently, but she had been shopping. A blood sample reveals elevated levels of granulocytes. What treatment is the physician likely to prescribe at this point?

A) interferon
B) corticosteroids
C) methotrexate
D) cyclophosphamide
E) antihistamines