Acta Dermato-Venereologica 99-2CompleteContent | Page 37

QUIZ SECTION 253 Rashes, Erosions and Purulent Fluid in the Intertriginous Areas: A Quiz Yonghu SUN 1,2 and Furen ZHANG 1,2 * 1 Shandong Provincial Institute of Dermatology and Venereology, and 2 Shandong Provincial Hospital for Skin Diseases, Shandong Academy of Medical Sciences, Jinan, Shandong, China. *E-mail: [email protected] A 69-year-old woman presented with a 2-month history of painful lesions, which had initially appeared on the axillae, and had spread rapidly to the infra-mammary folds and groin. On physical examination there were erythematous papules coalescing into plaques and erosions in the in- tertriginous areas, oozing purulent fluid, including in the inframammary folds and groin (Fig. 1 A, B). There was no lymphadenopathy, lymphangitis or mucous membrane involvement. The patient had no other systemic symptoms. Results of laboratory tests, including urea, electrolytes, liver function and blood cell counts were normal. A skin biopsy was obtained, which showed the presence of sparse inflam- matory infiltrates with numerous plasma cells (Fig. 1 C). What is your diagnosis? See next page for answer. Fig. 1. (A, B) Erythematous papules and erosions in the intertriginous areas, with massive amounts of purulent fluid in the inframammary fold and groin. (C) Skin biopsy showed the presence of a sparse number of plasma cells (original magnification, ×20). This is an open access article under the CC BY-NC license. www.medicaljournals.se/acta Journal Compilation © 2019 Acta Dermato-Venereologica. doi: 10.2340/00015555-3070 Acta Derm Venereol 2019; 99: 253–254