2018年9月1日 · Annular lesions can present in a variety of diseases. Knowledge of the physical appearance and history of presentation of these skin findings can help in the diagnosis. A pruritic, annular,...

What causes annular erythema? Often no specific cause for the annular erythema is found. However, it has been noted that annular erythema is sometimes linked to underlying diseases and conditions. These include: Bacterial, fungal and viral infections such as tuberculosis, secondary syphilis, sinusitis, candidiasis or tinea

Erythema annulare centrifugum is a chronic reactive form of annular erythema characterised by erythematous, circular, arciform, and polycyclic lesions, with a characteristic delicate scale behind the advancing edge (‘trailing scale’).

2024年6月8日 · Erythema annulare centrifugum is an annular, erythematous lesion that appears as urticaria-like papules, enlarges centrifugally, and clears centrally. A fine scale, called a trailing scale, is sometimes inside the advancing edge. The lesion is classified as a reactive erythema and has been associated with many different conditions.

Erythema annulare centrifugum (EAC) is a chronic, reactive phenomenon of the skin presenting with arcuate or annular, erythematous patches or thin plaques that frequently exhibit scale along the inner portion of the advancing edge of lesions ("trailing scale") (picture 1A-D). EAC has been reported to occur in association with a wide variety of ...

2022年9月1日 · Many viral diseases are characterized by skin manifestations in an annular form, including erythema infectiosum (Figure 1) and orf (Figure 2). Some annular exanthemata can represent unspecific cutaneous reactions of unclear pathogenesis to viral infections, such as acute urticaria, pityriasis rosea, erythema annulare centrifugum, erythema ...

2023年5月25日 · EAC may also be a sign of an infectious disease. In about 13 percent of cases, there is an underlying illness or infection. Rarely, it may be a sign of cancer. The average age of onset is 49...

Bacterial infections that may display annular lesions include erythrasma, erythema (chronicum) migrans of Lyme borreliosis, secondary syphilis, cutaneous tuberculosis and leprosy.

2023年5月24日 · Annular dermatoses are a heterogeneous and extremely diverse group of skin diseases, which share in common annular, ring-like patterns with centrifugal spreading. Numerous skin diseases...

2024年7月24日 · Erythema annulare centrifugum (EAC) is a fascinating and somewhat mysterious dermatological condition characterized by distinctive skin lesions. First described by Darier in 1916, EAC is defined by its presentation of redness (erythema) forming in ring-like (anulare) shapes that spread outward from a central point (centrifugum).