Multiple choice

Keratin is a fibrous scleroprotein that occurs in the outer layer of the skin and in horny tissues such as hair, feathers, nails and hooves. Which among the following diseases is caused by a fungus which has the ability to utilise keratin as a nutrient source for its growth?

  1. Paronychia

  2. Pityriasis folliculitis

  3. Dermatophytosis

  4. Chronic candidal onychomycosis

  5. Candidiasis

Reveal answer Fill a bubble to check yourself
C 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.