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Dermatology: Core Concepts MCQs

Waraq MBBS Review: Dermatology · MBBS / Medicine · 15 practice questions

1. Scabies is caused by:

  1. ASarcoptes scabiei
  2. BPediculus humanus
  3. CTinea
  4. DDemodex
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A. Sarcoptes scabiei The mite burrows in the skin and causes intense night itching.

2. Acne vulgaris involves which organism?

  1. ACutibacterium acnes
  2. BCandida
  3. CStaphylococcus aureus
  4. DMalassezia
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A. Cutibacterium acnes It colonises blocked sebaceous follicles.

3. Vitiligo is due to loss of:

  1. AKeratinocytes
  2. BLangerhans cells
  3. CMelanocytes
  4. DFibroblasts
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C. Melanocytes Autoimmune destruction of melanocytes gives white patches.

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