Erythema gyratum repens, a stage in the resolution of pityriasis rubra pilaris?

Abstract

Summary Erythema gyratum repens (EGR) is a rare and distinctive eruption which is widely regarded as a marker of internal malignancy (Rook, Wilkinson & Ebling, 1979). We report two cases of pityriasis rubra pilaris which presented in the classical form, but developed EGR during the resolving stage of the condition. Malignancy was not detected in cither case, despite extensive investigation.

Paraneoplastische Pityriasis rubra pilaris bei metastasiertem Adenokarzinom ohne lokalisierbares Primum

“…Dies gilt insbesondere, wenn die Dermatose bereits, wie im vorgestellten Fall, medikamentös anbehandelt ist. Einige Autoren sind der Ansicht, dass die beiden oben genannten Formen auch ineinander übergehen können (5,3 (4,6). Andere Autoren vermuten bei dieser Form der Neuropathie keinen sicheren Zusammenhang zwischen neurologischer Symptomatik und einem Malignom (11).…”

Pityriasis rubra pilaris

“…Prominent 20 or increasing 60 seborrheic keratoses have been reported in erythrodermic PRP, but with no apparent malignancy as defined in the sign of Leser–Trélat. Resolving PRP has resembled erythema gyratum repens, but again without an underlying malignancy 61 , 62 …”

Pityriasis rubra pilaris treated with methotrexate resolving with an erythema gyratum repens–like appearance

“…Six cases of PRP resolving with an EGR-like appearance have been previously identified. [2][3][4][5] A proposed etiology of this phenomenon is treatment with retinoids, as all previously reported patients received either systemic (5/6) or topical retinoid (1/6) therapy. [2][3][4][5] This case illustrates that resolving PRP can assume an EGR-like appearance irrespective of treatment and that retinoids are not required to induce this phenomenon.…”