University of North Dakota School of Medicine, Grand Forks, North Dakota She was afebrile on physical examination. The rash was a large, erythematous plaque with discrete borders. There was some ...

The patient was an elderly Caucasian man who came to the clinic with complaints of a red, intensely itchy rash on his elbows (Figure 1), buttocks (Figure 2), and back. His symptoms began with a slight ...