Multiple choice

Keratin is the key structural material making up the outer layer of human skin. Which of the following diseases is caused by a fungus, which have the ability to utilise keratin as a nutrient source?

  1. Candidiasis

  2. Chronic Candida onychomycosis

  3. Pityriasis folliculitis

  4. Paronychia

  5. Dermatophytosis
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E Correct answer
Explanation

Dermatophytosis of the scalp, glabrous skin, and nails is caused by dermatophytes which have the ability to utilise keratin as a nutrient source. No living tissue is invaded, the keratinised stratum corneum is simply colonised.

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