This document defines rheumatic fever as an immunological disorder initiated by Group A beta-hemolytic streptococcus that occurs after streptococcal pharyngitis. It affects people ages 6-15, and has a higher incidence in developing countries and crowded populations. Symptoms include symmetrical joint involvement and pain, fever, and potential damage to the heart, joints, and brain. Diagnosis involves evaluating criteria like arthritis, fever, and lab/imaging tests. Treatment focuses on bed rest, a penicillin regimen to prevent recurrence, and suppressive therapy. Prevention prioritizes treating streptococcal infections promptly.