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Diagnosis of pityriasis versicolor in paediatrics: the evoked scale sign
  1. Vivian S Shi1,
  2. Peter A Lio2
  1. 1University of Illinois College of Medicine, Chicago, Illinois, USA
  2. 2Department of Dermatology, Northwestern Memorial Hospital, Chicago, Illinois, USA
  1. Correspondence to Peter A Lio, Department of Dermatology, Northwestern Memorial Hospital, 676 N. Saint Clair, No. 1600, Chicago, IL 60611, USA; p-lio{at}northwestern.edu

https://doi.org/10.1136/adc.2010.200238

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    Pityriasis (tinea) versicolor is a superficial fungal infection of the stratum corneum by the lipophilic yeast Malassezia spp. It is very common and can often be diagnosed clinically. We illustrate a simple but very useful clinical manoeuvre to help secure the diagnosis when mycologic examination is unavailable and the clinical diagnosis is uncertain: the evoked scale sign.

    Case report

    A 12-year-old African-American male presented with a 4-week history of multiple non-pruritic hyperpigmented lesions on his …

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    Footnotes

    • Competing interests None.

    • Patient consent Obtained.

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