Erythema marginatum, a reactive inflammatory erythema specific to acute rheumatic fever, presents with circular, evanescent, nonpruritic erythematous rashes with serpiginous edges that ...

The rash has a characteristic erythematous ring with a pale center and is referred to as erythema marginatum. Sydenham's chorea (St. Vitus’ dance) occurs and is described as uncontrollable rapid ...