Infectious Disease
Fever of unknown origin
A prolonged fever that hasn't been explained despite initial evaluation — needing more systematic investigation.
Common symptoms
- Fever persisting beyond a week or two
- No clear source identified by initial tests
- Associated weight loss or night sweats
What it involves
A structured work-up — detailed history, targeted blood tests and imaging — to systematically narrow down the cause.
What to expect
A cause is found in most cases with thorough evaluation, though it can take time and multiple rounds of testing.
This page is educational information, not medical advice or a diagnosis. Every case is different — talk to a qualified, verified doctor about your specific symptoms and situation before making treatment decisions.
For patients
Verified doctors for fever of unknown origin
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