The patient is a 28-year-old man who presents to urgent care with a single annular ecchymosis lesion on his leg the morning after returning home from a trip to visit his family’s cabin in the mountains of North Carolina. He “thought” he noticed a small insect bite in the vicinity. The lesion has become increasingly painful.
View the photo taken and consider what your diagnosis and next steps would be. Resolution of the case is described on the next page.