Fresh plucked hair and skin scrapings from the edges of lesions are needed in diagnosing which of the following?

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M. canis, or Microsporum canis, is a dermatophyte fungus that causes ringworm in cats, dogs, and humans. Diagnosis often involves examining fresh plucked hair and skin scrapings under a microscope to identify the fungal elements, which is not typically the method used for diagnosing infections caused by the other listed pathogens.

Fresh Plucked Hair and Skin Scrapings from the Edges of Lesions