Papulosquamous disorders: Woronoff ring: 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: Woronoff ring

Sample item

A pale halo that develops around resolving psoriatic plaques during phototherapy or topical treatment is known as:

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

The answer and the reasoning

D. Woronoff ring

Woronoff ring is a blanched peripheral halo around a psoriatic plaque during resolution. It is thought to reflect local prostaglandin changes. It is a clue that treatment is working.

Option by option

  • A. Wickham striae

    Wickham striae are white lines on lichen planus papules.

  • B. Auspitz sign

    Auspitz sign is pinpoint bleeding on scale removal.

  • C. Hertoghe sign

    Hertoghe sign is lateral eyebrow thinning.

  • D. Woronoff ring (correct)

    Correct. The pale halo around a clearing psoriatic plaque is a Woronoff ring.

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, Woronoff ring. Woronoff ring is a blanched peripheral halo around a psoriatic plaque during resolution.

Why is "Wickham striae" not the answer?

Wickham striae are white lines on lichen planus papules.

Why is "Auspitz sign" not the answer?

Auspitz sign is pinpoint bleeding on scale removal.

Why is "Hertoghe sign" not the answer?

Hertoghe sign is lateral eyebrow thinning.

What concept does this question test?

It tests Papulosquamous disorders: Woronoff ring in Dermatology. It is thought to reflect local prostaglandin changes. It is a clue that treatment is working.

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: Woronoff ring?

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.