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Recurrent dusky lesions: would you recognise this dermatosis?
  1. R Robl,
  2. M Uber,
  3. L P Marinoni,
  4. K T Abagge,
  5. V O Carvalho
  1. Department of Pediatric Dermatology, Hospital de Clinicas—UFPR, Curitiba, Brazil
  1. Correspondence to Dr R Robl, Department of Pediatric Dermatology, Hospital de Clinicas—UFPR, Rua Richard Strauss 62-vista alegre, Curitiba, Paran 80-820-110, Brazil; natarobl{at}

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A 10-year-old otherwise healthy boy had a 4-day history of a dusky-red plaque on his right thigh, measuring 10×6 cm, with an erythematous periphery. Later, bullae developed on top of the plaque, and other lesions appeared on the trunk, limbs and penis (figure 1). Previously he had manifested an identical plaque in the same area (right thigh), with residual hyperpigmentation, that lasted 3 weeks. Due …

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  • Competing interests None.

  • Patient consent Obtained.

  • Ethics approval Comitê de Ética do Hospital de Clínicas do Paraná.

  • Provenance and peer review Not commissioned; externally peer reviewed.