FUO: http://emedicine.medscape.com/article/217675-overview There really are a lot of tests that need to be done, but most are done after the 3-week mark. "Many Doctors" are a bad idea, as most will do the same basic tests on the first visit, and only do the more complicated ones after the initial tests fail to give an answer, so you are better off sticking to one dr.
Answered 7/27/2016
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