The rings are barely raised and are non-itchy. The face is generally spared. Associated conditions It occurs in less than 5% of patients with rheumatic fever, but is considered a major Jones criterion when it does occur. The four other major criteria include carditis, polyarthritis, Sydenham's chorea, and subcutaneous nodules. In this case, it is often associated with Group A streptococcal infection, otherwise known as Streptococcus pyogenes infection, which can be detected with an ASO titer. It is an early feature of rheumatic fever and not pathognomonic of it. It may be associated with mild myocarditis (inflammation of heart muscle). It is also seen in conditions like allergic drug reactions, sepsis and glomerulonephritis. It often occurs as a harbinger of attacks in hereditary angioedema. In this case it may occur several hours or up to a day before an attack.
Erythema marginatum
Granulomatous slack skin
Pachyderma
Hypodermyasis
Nodular lichen myxedematosus
Ichthyosis linearis circumflexa
Hypertrichosis cubiti
Erythema induratum