Erythema annulare centrifugum - 離心性環狀紅斑
與這張圖相反，更常見的是病灶沒有結垢。
relevance score : -100.0%
ReferencesErythema annulare centrifugum (EAC) 是一种红色皮疹，呈环形并向外扩散，留下清晰的中心。当 EAC 因癌症而出现时，称为 PEACE (paraneoplastic erythema annulare centrifugum eruption)。PEACE 在女性中更为常见，通常出现在癌症诊断之前，且可能在治疗后复发。EAC 是环形皮疹的主要类型之一，与其他主要的图形红斑（erythema marginatum、erythema migrans、erythema gyratum repens）相比，具有独特的特征。
Erythema annulare centrifugum (EAC) is an annular, erythematous lesion that appears as urticarial-like papules and enlarges centrifugally, then clears centrally. A fine scale is sometimes present inside the advancing edge, known as a trailing scale. Erythema annulare centrifugum is classified as a reactive erythema and has been associated with various underlying conditions, including malignancies. When erythema annulare centrifugum occurs as a paraneoplastic phenomenon, it has been designated PEACE (paraneoplastic erythema annulare centrifugum eruption). PEACE is more commonly seen in females, typically precedes the clinical diagnosis of malignancy, and may recur with subsequent relapses. EAC is one of the three major figurate erythemas, with EAC being the most common. These dermatoses share the common presentation of advancing erythematous, annular lesions, but are each separated by unique clinical and histopathologic characteristics. Once the other major figurate erythemas (erythema marginatum, erythema migrans, and erythema gyratum repens) are excluded, EAC often becomes a diagnosis of exclusion.
Erythema annulare centrifugum (EAC) is an annular, erythematous lesion that appears as urticarial-like papules and enlarges centrifugally, then clears centrally. A fine scale is sometimes present inside the advancing edge, known as a trailing scale. Erythema annulare centrifugum is classified as a reactive erythema and has been associated with various underlying conditions, including malignancies. When erythema annulare centrifugum occurs as a paraneoplastic phenomenon, it has been designated PEACE (paraneoplastic erythema annulare centrifugum eruption). PEACE is more commonly seen in females, typically precedes the clinical diagnosis of malignancy, and may recur with subsequent relapses. EAC is one of the three major figurate erythemas, with EAC being the most common. These dermatoses share the common presentation of advancing erythematous, annular lesions, but are each separated by unique clinical and histopathologic characteristics. Once the other major figurate erythemas (erythema marginatum, erythema migrans, and erythema gyratum repens) are excluded, EAC often becomes a diagnosis of exclusion.
Erythema annulare centrifugum (EAC) 是一種紅色皮疹，呈圓形，且皮膚常呈片狀。人們認為它是由多種因素觸發的，但我們仍不確定其具體發病機制。皮疹平均持續約 11 個月。我們討論了一位患有 EAC 已 50 年、復發原因不明的患者。雖然此情況似乎確實會在一年中的特定時期出現，但該病例代表了目前報告中 EAC 持續時間最長的案例。
Erythema annulare centrifugum (EAC) is a type of red rash that forms circular shapes and often has flaky skin. It's thought to be triggered by various factors, but we're not sure exactly how it happens. On average, the rash lasts for about 11 months. We discuss a patient who has had EAC coming back for 50 years without a clear reason. While it does seem to come back at certain times of the year, this case represents the longest reported duration of EAC.
Erythema annulare centrifugum (EAC) is a type of red rash that forms circular shapes and often has flaky skin. It's thought to be triggered by various factors, but we're not sure exactly how it happens. On average, the rash lasts for about 11 months. We discuss a patient who has had EAC coming back for 50 years without a clear reason. While it does seem to come back at certain times of the year, this case represents the longest reported duration of EAC.
此病可發生於任何年齡層，呈凸起的粉紅色環或靶心樣病灶，尺寸介於 0.5–8 公分（0.20–3.15 英吋）。隨著時間推移，病變有時會增大、擴散，且可能呈不完整或不規則形狀。
可透過皮膚活檢確診。病灶可持續於任何部位，平均病程約 11 個月。通常不需要治療，但外用類固醇可能有助於減輕發紅、腫脹和搔癢。