Bacterial skin infection: practice question

A Dermatology question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Dermatology · Bacterial skin infection

Sample item

Which organism is a common cause of nonbullous impetigo?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

B. Staphylococcus aureus

Nonbullous impetigo is commonly caused by Staphylococcus aureus, sometimes with group A streptococci; it remains a superficial bacterial infection of the epidermis.

Option by option

  • A. Candida albicans

    Candida causes fungal infections rather than typical bacterial impetigo.

  • B. Staphylococcus aureus (correct)

    Correct: Staphylococcus aureus commonly causes nonbullous impetigo.

  • C. Mycobacterium tuberculosis

    Mycobacterium tuberculosis does not usually cause superficial impetigo.

  • D. Varicella-zoster virus

    Varicella-zoster virus causes vesicular viral eruptions, not impetigo.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

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Questions about this Dermatology question

What is the answer to this Dermatology question?

The best answer is B, Staphylococcus aureus. Nonbullous impetigo is commonly caused by Staphylococcus aureus, sometimes with group A streptococci; it remains a superficial bacterial infection of the epidermis.

Why is "Candida albicans" not the answer?

Candida causes fungal infections rather than typical bacterial impetigo.

Why is "Mycobacterium tuberculosis" not the answer?

Mycobacterium tuberculosis does not usually cause superficial impetigo.

Why is "Varicella-zoster virus" not the answer?

Varicella-zoster virus causes vesicular viral eruptions, not impetigo.

What concept does this question test?

It tests Bacterial skin infection in Dermatology. The correct option holds because: Correct: Staphylococcus aureus commonly causes nonbullous impetigo.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Bacterial skin infection?

Learn each condition by its primary lesion, site and signature sign. Then use the flashcards and the other Dermatology questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.