2 doctors weighed in:

What are the different reasons for an unexplained fever in a 25 year old?

2 doctors weighed in
Dr. Dan Fisher
Internal Medicine
1 doctor agrees

In brief: 4 categories.

If the fever (t>100.
5) has been present for 3 weeks or more and has defied reasonable attempts to explain, the most likely cause of the fever will eventually be "unexplained." another 20% of patients will eventually be found to have an inflammatory cause, another 20% will be found to have an occult infection and 10% will be found to have a malignancy.

In brief: 4 categories.

If the fever (t>100.
5) has been present for 3 weeks or more and has defied reasonable attempts to explain, the most likely cause of the fever will eventually be "unexplained." another 20% of patients will eventually be found to have an inflammatory cause, another 20% will be found to have an occult infection and 10% will be found to have a malignancy.
Dr. Dan Fisher
Dr. Dan Fisher
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