Fever of unknown origin in special groups

Area of Science:

• Internal Medicine
• Clinical Diagnostics

Background:

• Fever of undetermined origin (FUO) is a common and complex clinical presentation.
• FUO is defined by prolonged fever (≥ three weeks) without a diagnosis after extensive investigation.
• Key etiologies include infections, neoplasms, and inflammatory conditions.

Purpose of the Study:

• To outline the diagnostic approach for patients presenting with FUO.
• To emphasize the importance of clinical history and physical examination in guiding investigations.
• To highlight the risks associated with empirical therapy in FUO.

Main Methods:

• Review of diagnostic strategies for FUO.
• Emphasis on comprehensive clinical assessment.
• Guidance on selecting appropriate diagnostic tests based on initial findings.

Main Results:

• A systematic diagnostic approach, starting with non-specific tests, is recommended.
• Early and accurate diagnosis is essential for effective management.
• Empirical treatment can hinder diagnosis and complicate patient care.

Conclusions:

• Effective management of FUO relies on a thorough clinical evaluation and judicious use of diagnostic tests.
• Avoiding empirical therapy is critical to prevent diagnostic delays.
• Prognosis varies significantly based on the underlying cause of FUO.