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  • Title: Juvenile idiopathic arthritis presenting with prolonged fever.
    Author: Yeh TL, Huang FY, Shyur SD, Chen TL, Lee CS, Huang DT.
    Journal: J Microbiol Immunol Infect; 2010 Jun; 43(3):169-74. PubMed ID: 21291842.
    Abstract:
    BACKGROUND/PURPOSE: Systemic-onset juvenile idiopathic arthritis (s-JIA) is a systemic disease often accompanied by a fever. We examined 16 patients with s-JIA and reported the clinical manifestations, laboratory data, treatments and outcomes. METHODS: From 1984 to 2007, 16 children (aged 1-16 years), who were diagnosed as having s-JIA, were admitted to the Mackay Memorial Hospital in Taiwan. We retrospectively reviewed their medical charts. RESULTS: There were nine boys and seven girls, with mean age of onset of 7.4±5.5 years. Fever (100%), typical rash (63%), and arthritis (75%) were the three most common symptoms. Lymphadenopathy (50%), hepatosplenomegaly (63%), pleural pulmonary manifestations (13%) and myalgia (25%) were also noted. One patient had Epstein-Barr virus-associated hemophagocytic syndrome complications. Neutrophilic leukocytosis was a common feature. Other laboratory data showed elevated C-reactive protein levels (25.1±50.3 mg/dL), and erythrocyte sedimentation rates (69±28 mm/hr) and abnormal liver enzymes. Marked hyperferritinemia (> 2,000 ng/mL) was noted in 57% (4/7) of the patients. The mean time from onset of symptoms to diagnosis was 9.2 weeks. Non-steroidal anti-inflammatory drugs, steroids, disease-modifying anti-rheumatic drugs and anti-tumor necrosis factor agents were used for treatment. Due to prolonged fever, 2.0±1.6 (maximum=5) different kinds of antibiotics were used before a diagnosis was made. Most cases had satisfactory therapeutic outcomes except one boy, who had permanent joint contracture. CONCLUSION: The clinical manifestations of s-JIA in Taiwan were often accompanied by a prolonged fever. This results in clinicians often suspecting bacterial infections and prescribing several kinds of antibiotics. In the case of prolonged fever, s-JIA should always be placed on the list of differential diagnoses.
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