A man in his 80s presented with a 2-year history of an asymptomatic, expanding eruption on the trunk and extremities. He denied any systemic symptoms. Physical examination revealed a serpiginous, erythematous eruption with a peripheral scale resembling wood grain (Figure). Histologic findings showed a perivascular lymphohistiocytic infiltrate with no deposition noted on a direct immunofluorescence assay. A workup for malignancy revealed a mass in the prostate with bilateral para-aortic and inguinal lymphadenopathy and an elevated level of prostate-specific antigen. The patient declined surgery and was lost to follow-up.
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Votquenne N, Richert B. Erythema Gyratum Repens. JAMA Dermatol. 2020;156(8):912. doi:10.1001/jamadermatol.2020.1694
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