Case Presentation: A 62-year-old malnourished, Hispanic man presented with fever and malaise for 1 week associated with headache. Past medical history was significant for rheumatoid arthritis treated with prolonged, unmonitored prednisone, chronic obstructive pulmonary disease, and a history of 18 cats at home. On examination, the patient was alert and oriented, febrile, and cachectic, but [...]