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The patient, an 87-year-old woman, presented with a circular and pruritic rash that had been present on her right shin for 3 days. She had no fever.
View the image taken (Figure 1) and consider what your diagnosis would be.
Resolution of the case is described on the next page.

Clinical Challenge 2: November, 2012

Nahum Kovalski, BSc, MDCM

Clinical Researcher at TEREM Emergency Services