Erythema gyratum repens: a pathogenetic mystery and therapeutic challenge

Excerpt

Dear editors, We report the case of a 64-year-old white male patient admitted to the dermatologic department with multiple annular lesions located on the arms and legs with an 8‑year history. The lesions presented initially as several small rounded papules with more pronounced edges, but gradually increased in size and became disseminated. At the time of admission, he presented with numerous annular lesions with sharply distinguishable erythematous margins, which, on closer inspection were double- and triple-lined in some areas (Fig. 1a, b, c). Mucous membranes were not affected by pathologic changes. Complaints included severe pruritus, which was reported to be painful during and after scratching. The patient had been treated with topical and systemic corticosteroids over the years, without satisfactory improvement. His medical history included diabetes type 2, toxic nodular goiter, arterial hypertension, iron deficiency anemia well controlled with therapy, and alcoholism. No family history of dermatologic diseases or neoplasms was available.

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