Papulosquamous disorders: 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 · Papulosquamous disorders

Sample item

The Auspitz sign (pinpoint bleeding on removing scales) is characteristic of:

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

The answer and the reasoning

D. Psoriasis

Removing the silvery scale of a psoriatic plaque exposes thin suprapapillary epidermis and dilated capillaries, causing punctate bleeding (Auspitz sign). Other features include the Koebner phenomenon and nail pitting.

Option by option

  • A. Pityriasis rosea

    Pityriasis rosea shows a herald patch and a Christmas-tree pattern.

  • B. Tinea corporis

    Tinea corporis shows an annular scaly lesion with central clearing.

  • C. Lichen planus

    Lichen planus shows Wickham's striae.

  • D. Psoriasis (correct)

    Correct. This is a classic sign of psoriasis.

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 D, Psoriasis. Removing the silvery scale of a psoriatic plaque exposes thin suprapapillary epidermis and dilated capillaries, causing punctate bleeding (Auspitz sign).

Why is "Pityriasis rosea" not the answer?

Pityriasis rosea shows a herald patch and a Christmas-tree pattern.

Why is "Tinea corporis" not the answer?

Tinea corporis shows an annular scaly lesion with central clearing.

Why is "Lichen planus" not the answer?

Lichen planus shows Wickham's striae.

What concept does this question test?

It tests Papulosquamous disorders in Dermatology. Other features include the Koebner phenomenon and nail pitting.

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 Papulosquamous disorders?

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.