Erythema annulare centrifugum
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References
Mae Erythema annulare centrifugum (EAC) yn fath o frech goch sy'n ffurfio siâp cylch ac yn ymledu tuag allan, gan adael canol clir. Pan fydd EAC yn ymddangos oherwydd canser, fe'i gelwir yn PEACE (paraneoplastic erythema annulare centrifugum eruption) . Mae PEACE yn fwy cyffredin ymhlith merched, yn aml yn ymddangos cyn i ganser gael ei ddiagnosio a gall ddod yn ôl ar ôl triniaeth. EAC yw un o'r prif fathau o frechau siâp cylch, gyda nodweddion unigryw o'i gymharu ag erythemâu ffiguraidd mawr eraill (erythema marginatum, erythema migrans, erythema gyratum repens) .
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.
Mae Erythema annulare centrifugum (EAC) yn fath o frech goch sy'n ffurfio siapiau crwn ac sydd â chroen fflawiog yn aml. Credir ei fod yn cael ei sbarduno gan ffactorau amrywiol, ond nid ydym yn siŵr sut yn union y mae'n digwydd. Ar gyfartaledd, mae'r frech yn para am tua 11 mis. Rydym yn trafod claf sydd wedi cael EAC yn dychwelyd ers 50 mlynedd heb reswm clir. Er ei bod yn ymddangos ei fod yn dod yn ôl ar rai adegau o'r flwyddyn, yr achos hwn yw'r cyfnod hiraf yr adroddwyd amdano o 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.
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.
Yn digwydd ar unrhyw oedran mae'r briwiau hyn yn ymddangos fel modrwy pinc-coch wedi'i godi neu farciau llygaid-tarw. Maent yn amrywio mewn maint o 0.5-8 cm (0.20-3.15 in). Mae'r briwiau weithiau'n cynyddu maint ac yn lledaenu dros amser ac efallai nad modrwyau cyflawn ydynt ond siapiau afreolaidd.
Gellir cynnal biopsi croen i gadarnhau'r afiechyd. Gall y briwiau bara o unrhyw le am gyfnod cyfartalog o 11 mis. Fel arfer nid oes angen triniaeth arno, ond gall steroidau argroenol fod o gymorth i leihau cochni, chwyddo a chosi.