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.

Try it

Dermatology · Psoriasis

Sample item

What is the Koebner phenomenon?

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

The answer and the reasoning

C. New lesions at sites of trauma

Koebner phenomenon describes development of lesions of a dermatosis such as psoriasis along areas of skin trauma, scratching, or irritation.

Option by option

  • A. Immediate blistering from heat

    Thermal blistering is direct burn injury, not Koebner phenomenon.

  • B. Hair growth after injury

    Hair growth after injury is not the described response.

  • C. New lesions at sites of trauma (correct)

    Correct: trauma can trigger psoriatic lesions through Koebnerization.

  • D. Loss of pigment after sun

    Loss of pigment after sun does not define Koebner phenomenon.

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 C, New lesions at sites of trauma. Koebner phenomenon describes development of lesions of a dermatosis such as psoriasis along areas of skin trauma, scratching, or irritation.

Why is "Immediate blistering from heat" not the answer?

Thermal blistering is direct burn injury, not Koebner phenomenon.

Why is "Hair growth after injury" not the answer?

Hair growth after injury is not the described response.

Why is "Loss of pigment after sun" not the answer?

Loss of pigment after sun does not define Koebner phenomenon.

What concept does this question test?

It tests Psoriasis in Dermatology. The correct option holds because: Correct: trauma can trigger psoriatic lesions through Koebnerization.

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.