A puzzling illness/ any ideas?

[Guest guest]

Folks: I just found out that a young relative of mine has been ill since

June and the doctors are stumped. So on the off chance that anyone here has

any ideas of what could be wrong with him, here goes:

He's very young, late 30's and been a vegan for the past few years. For the

past week he's eating some fish and meat due to anemia which was discovered

during dozens of tests to try to figure out what his ailment is

Weight 190#, 6'3 " .

Fevers, night sweats, extreme fatigue, muscle pain (which when he first got

sick were only in the am, but now he is in pain all day). Also a " thorny "

feeling in his scalp.

After an initial weight loss, his weight is now stable and his appetite is

OK. But he is feeling awful and was hospitalized just last week. He is now

home.

Every test under the sun has been run on him and everything including lyme

disease, mononucleosis, chronic fatigue syndrome as well as cancer has been

ruled out. (Although it is my understanding that the lyme disease tests are

not always accurate). He goes back to the infectious disease specialist

next week.

The doctors are telling him that he might have " fever of unknown origin "

(IOW they don't know what's wrong with him) which often just " goes away " .

He is going to an excellent medical facility, Duke University Medical

Center, down in North Carolina.

TIA for any comments.