Case Presentation: A 39-year-old man presented with several days of worsening lightheadedness, fevers, and joint pains. His temperature was 99.8 Fahrenheit, pulse 122 per minute, and blood pressure 80/51 mmHg. He looked ill and uncomfortable. His palms and soles had multiple tender, purple-to-black macules and patches 3-30 mm in dimension, consistent with embolic infarcts (image [...]