Erythema marginatum is described as the presence of pink rings on the trunk and inner surfaces of the arms and legs which come and go for as long as several months. The rings are barely raised and are pruritic. The face is generally spared.

It occurs in less than 5% of patients with rheumatic fever, but is considered a major _Modified_Jones_Criteria when it does occur.

It is an early feature of rheumatic fever and may be associated with mild carditis (inflammation of heart muscle).

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