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Published on: July 29, 2007
Adult-Onset Still Disease (AOSD)
Egambaram Senthilvel1, Aphrodite Papadakis, Michael McNamara
1Department of Family Medicine, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH, USA. Senthilvelegambaram@yahoo.com
Summary
Adult-onset Still disease (AOSD) can present as fever of unknown origin, mimicking infections like Mycoplasma pneumonia or Epstein-Barr virus. Early diagnosis is challenging due to overlapping symptoms and lack of specific markers.
Area of Science:
- Rheumatology
- Infectious Diseases
- Internal Medicine
Background:
- Adult-onset Still disease (AOSD) is a rare systemic inflammatory disorder.
- It primarily affects young adults and often presents with fever of unknown origin.
- Diagnosis is challenging due to nonspecific symptoms and overlap with other conditions.
Observation:
- An 18-year-old male presented with fever, sore throat, and arthritis.
- Initial serology was positive for Mycoplasma pneumonia and Epstein-Barr virus infection.
- Symptoms persisted, leading to a later diagnosis of AOSD based on diagnostic criteria.
Findings:
- The case highlights how initial infections can mislead the diagnosis of AOSD.
- Diagnostic ambiguity and lack of specific serological markers complicate early identification.
- This case underscores the importance of considering AOSD in young adults with persistent, unexplained symptoms.
Implications:
- Primary care physicians must be aware of potential diagnostic pitfalls in AOSD.
- Recognizing triggering infections is crucial for timely AOSD diagnosis.
- Further research into diagnostic markers for AOSD is warranted.
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