Adult-Onset Still's Disease: Case Report

Introduction: Adult-onset Still's disease (ASD) is a systemic inflammatory disease of unknown etiology and pathogenesis. ASD, one of the most important causes of fever of unknown origin, is diagnosed after ruling out infection, malignancy, and rheumatologic diseases. It may also present with fever alone, without typical skin rash and articular manifestations. Case Report: There are no pathognomonic laboratory findings in ASD. In this paper, we report a case that presented to the emergency department with fever, malaise, and joint pain for 5 days and was subsequently diagnosed with ASD. Conclusion: In patients with prolonged fever combined with musculoskeletal symptoms and macular rash, the differential diagnosis should include ASD. Timely diagnosis and treatment of the disease can prevent complications and lead to a favorable prognosis