الفهرس 
FeverOnly 14 pages are availabe for public view
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Abstract
Background: Fever of unknown origin (FUO) identifies a syndrome of fever that does not resolve spontaneously, in which the cause remains elusive after an extensive diagnostic workup. Petersdorf and Beeson first coined the term fever of unknown origin in 1961 and defined it as a temperature higher than 38.3°C on several occasions and lasting longer than 3 weeks, with a diagnosis that remains uncertain after 1 week of investigations in hospital.
Objective: To estimate the rate of diagnosed and undiagnosed cases of FUO at Imbabah fever hospital. To describe unclassified FUO patient in term of (demographic, clinical presentation, investigations and final diagnosis).
Patients and Methods: This was achieved with a descriptive prospective which conducted on patients presented by fever of unknown origin in Imbaba Fever Hospital in the period between June 2018 to May 2019.
Results: Infectious diseases were the most common cause of FUO and represents 72% followed by collagen disease 20% & then malignancies about 2%. Un diagnosed were 4.6%. Brucellosis accounts about 39.5% of total studied population. Still disease 7% was the most common autoimmune disease behind FUO.
Conclusion: Our findings indicated that improved technology and availability of more sophisticated laboratory tests and imaging studies with advances in interventional radiology might have led to better diagnosis of FUO etiologies. Like previous studies, we found infectious diseases as the most common cause of FUO among determined causes in our region. Collagen vascular diseases and malignancies were diagnosed as the second and the third common causes of FUO, respectively