Case Presentation: A 49-year-old male with a history of type 1 diabetes mellitus, end stage renal disease, status post pancreas-kidney transplant maintained on tacrolimus and mycophenolate mofetil, who presented with a three-day history of fever, tension like headache, nausea, and non-bloody emesis. He denied exposures to pets, including cats. Laboratory values were significant for elevated [...]