case_images: PMC11730951_01
case_images: A, Red papules on the trunk progressing to erythroderma sparing the skinfolds (deck-chair sign). B, After 4 weeks of treatment, the eruption had significantly improved.
case_images: gr1.jpg
case_images: PMC11730951_01_gr1.jpg
case_images: fig1
case_images: A 52-year-old man presented to our dermatology clinic with a 7-month history of pruritic, red papules scattered across his trunk, which had gradually progressed to erythroderma, notably sparing the skinfolds (Fig 1, A). After 4 weeks of treatment, the eruption and pruritus had nearly resolved (Fig 1, B).
case_images: Skin biopsy demonstrating edema in the stratum spinosum and perivascular lymphocytic infiltration with multiple eosinophils, consistent with subacute dermatitis (A and B, Hematoxylin-eosin stain; original magnifications: A, x20; B, x40.).
case_images: gr2.jpg
case_images: PMC11730951_01_gr2.jpg
case_images: fig2
case_images: Histology exhibited mild thickening of the stratum corneum, acanthosis with spongiosis, and perivascular dermatitis with eosinophils, consistent with spongiotic dermatitis (Fig 2).