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ubtypesdetermined by manifestations during the first six months of disease although manifestations more closely resembling another subtype may appear later Systemic onset JRA* subtypes: Polyarthritis Oligoarthritis,第二十六頁,共五十一頁。,ACR Clinical Classification Criteria for Juvenile Rheumatoid Arthritis,*Typical fever and rash will be considered probable systemic onset JRA if not associated with arthritis. Before a definite diagnosis can be made, arthritis, as defined must be present. Pauciarticular* subtypes: Antinuclear antibody (ANA) positivechronic uveitis Rheumatoid factor (RF) positive Seronegative, B27 positive Not otherwise classified,第二十七頁,共五十一頁。,ACR Clinical Classification Criteria for Juvenile Rheumatoid Arthritis,*Patients with systemic onset JRA are excluded from this onset subtype. Polyarticular subtypes: RF positivity Not otherwise classified *Patients with systemic JRA onset are excluded from this subtype.,第二十八頁,共五十一頁。,ACR Clinical Classification Criteria for Juvenile Rheumatoid Arthritis,Other rheumatic diseases Rheumatic fever Systemic lupus erythematosus Ankylosing spondylitis Polymyositis or dermatomyositis Vasculitic syndromes Scleroderma Psoriatic arthritis Rei