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Discussion

Erythrasma is caused by which of the following microorganism?

  • A.Corynebacterium diphtheriae
  • B.Corynebacterium ulcerans
  • C.Corynebacterium minutissimum
  • D.Listeria monocytogenes

Answer: C

Correct answer: Corynebacterium minutissimum

Erythrasma is a superficial infection of the skin folds - groin, axilla and toe webs - caused by Corynebacterium minutissimum. It produces well-demarcated reddish-brown scaly patches which fluoresce coral-pink under Wood’s light because of the porphyrins the organism makes, and that fluorescence distinguishes it at once from the fungal infections it resembles. Treatment is with topical or oral erythromycin.

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