There is a condition in medicine as "Fever of Unknown Origin" or FUO. It is diagnosed as documented fever of 101F for 3 weeks and appropriate investigation of about 1 week. There are many causes of FUO, but generally they fall under infections, collagen and vascular diseases, and tumors. The most common of these causes is still an infectious cause like abcesses, endocarditis, and tuberculosis. If you currently live in the US, malaria and typhoid is a rare cause. However if you are in a developing country I would consider also tuberculosis. Tuberculosis can occur anywhere in the body not just in the lungs.
If an infectious cause has been ruled out the second most common is a tumor. This is considered if the former has been ruled out.
In any case 5-15% of patients remain undiagnosed, despite extensive evaluations.
2007-01-20 06:49:03
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answer #1
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answered by bones 2
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I assume since you mention typhoid and malaria that you are in an area where these are endemic. At what time(s) of the day did you get your blood tested?
Check for filariasis (specifically, lymphatic filariasis), as it is commonly found in the same geographical distribution as malaria.
You may do well to have the blood drawn at night as well, if not already done. In this and some other infections, the parasites migrate to the peripheral blood vessels during the night, when the mosquitoes (e.g. Anopheles sp.) that transmit them bite. That is when you're most likely to catch them on testing.
It may be pyrexia of unknown origin (PUO) as the previous Dr already mentioned, but this is a diagnosis of exclusion, and if in fact you are in an area where such diseases as mentioned above are prevalent, then you want to make sure they are testing everything and accurately!
Hope this helps.
2007-01-20 08:13:54
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answer #2
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answered by Blah? 4
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anytime there is fever that means somewhere in your body there is an infection,I know that...If the doctor cannot find it in the blood,that does not mean it isn,t there...it has to be there or you would not be running a fever....Meanwhile it would be the best thing to get a really good antibiotic that rids the body several types of diseases and continue searching until you can locate the cause...something is causing it so you have to continue looking until the source has been found.
2007-01-20 05:11:53
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answer #3
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answered by slickcut 5
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there are many viruses out there that can cause a temperature hike lasting as long as yours.
if the doctor just did standard blood labs and nothing appeared, chances are he doesn't know.
diseases like hepatitis c can actually show no elevations in the ALT and AST levels in the standard liver panel. I would go back and ask the doctor to test you for antibodies for HCV.
mono can also cause a fever too.
good luck
2007-01-20 04:58:11
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answer #4
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answered by giggling.willow 4
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you need to change your doctor. when thier is a fever your body
is telling you that something in your body is wrong. it could be just a cold to having some wierd thing. if you are a young teen it could be that you are growing. and if youare in your 30's go see a doctor not just one many so they can help before it's to late.
2007-01-20 05:11:02
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answer #5
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answered by Anonymous
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maybe there's something wrong with the temperature regulation in your body..
2007-01-20 04:48:17
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answer #6
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answered by inches 3
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