Psoriasis: 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 · Psoriasis

Sample item

What phenomenon describes psoriatic lesions appearing at skin trauma sites?

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

The answer and the reasoning

A. Koebner phenomenon

Koebner phenomenon is the development of lesions of psoriasis and certain other dermatoses along sites of skin injury, scratching, or irritation.

Option by option

  • A. Koebner phenomenon (correct)

    Correct: Koebner phenomenon is trauma-induced lesion formation.

  • B. Kernig sign

    Kernig sign is a meningeal irritation sign.

  • C. Babinski sign

    Babinski sign assesses corticospinal function.

  • D. Tinel sign

    Tinel sign indicates nerve irritation.

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.

More Dermatology questions

Questions about this Dermatology question

What is the answer to this Dermatology question?

The best answer is A, Koebner phenomenon. Koebner phenomenon is the development of lesions of psoriasis and certain other dermatoses along sites of skin injury, scratching, or irritation.

Why is "Kernig sign" not the answer?

Kernig sign is a meningeal irritation sign.

Why is "Babinski sign" not the answer?

Babinski sign assesses corticospinal function.

Why is "Tinel sign" not the answer?

Tinel sign indicates nerve irritation.

What concept does this question test?

It tests Psoriasis in Dermatology. The correct option holds because: Correct: Koebner phenomenon is trauma-induced lesion formation.

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 Psoriasis?

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.