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Answers to Dermatophile questions
  1. Peter A Lio1,2,
  2. Kachiu C Lee3
  1. 1Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
  2. 2Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
  3. 3Department of Dermatology, Brown University, Providence, Rhode Island, USA
  1. Correspondence to Dr Peter A Lio, 1455 North Milwaukee Avenue, 2nd Floor, Chicago, IL 60622, USA; p-lio{at}

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From questions on page 106.

ANSWER TO Question 1

The answer is (D), kerion. This is a manifestation of tinea capitis, ringworm of the scalp. It can occur in more severe cases and in the very young, resulting in a boggy mass on the scalp with loss of hair. Diagnosis can be difficult as potassium hydroxide preparations can be negative in the presence of such inflammation; culture is frequently needed to prove scalp infection. Treatment must be in the form of an oral antifungal drug …

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  • Contributors KCL is involved in drafting the manuscript, and PAL revised and supervised the manuscript.

  • Competing interests None.

  • Provenance and peer review Commissioned; externally peer reviewed.

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    Peter A Lio Kachiu C Lee