Fast Five Quiz: Mimics of Rheumatoid Arthritis

Herbert S. Diamond, MD


July 28, 2022

Rheumatic fever is characterized by the migratory nature of the arthritis, an elevated antistreptolysin O titer, and a more dramatic and prompt response to aspirin. Carditis and erythema marginatus may occur in adults, but chorea and subcutaneous nodules virtually never do. Elevations in erythrocyte sedimentation rate and C-reactive protein level are noted in both conditions, related to disease activity. Antinuclear antibodies are present in many patients with RA; however, test results for antibodies to most nuclear antigen subsets are often negative.

Learn more about rheumatic fever.

This Fast Five Quiz was excerpted and adapted from the Medscape articles Rheumatoid Arthritis and Parvovirus B19 Infection.

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