Re: Mysterious fevers without origin. EVERY NIGHT! For about a year!
Well, I just spoke to my Doc who is a Cardiologist (I'm a medic in Afghanistan). Although it's a very vague response, he says it's either Malignancy, and Infection, or Autoimmune. He also says since you have a history of endocarditis, it is common to have a hidden abscess which can cause these symptoms. Good luck