rheumatic fever n.
An acute inflammatory disease occurring during recovery from infection with group A streptococci, having an onset marked by fever and joint pain. It is associated with polyarthritis, Sydenham's chorea, and endocarditis, and is frequently followed by scarring of the heart valves.
An infectious disease occurring most often in children who have had a previous infection with a strain of streptococcus. Rheumatic fever, which is characterized by fever and joint pain, can cause permanent damage to the heart if left untreated. Antibiotics, such as penicillin, are used in treating the disease.