Cutaneous tuberculosis: scrofuloderma: 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 · Cutaneous tuberculosis: scrofuloderma

Sample item

A child has a bluish-red swelling in the neck that breaks down into ulcers and sinuses overlying a tuberculous lymph node. Which type of cutaneous tuberculosis is this?

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

The answer and the reasoning

B. Scrofuloderma

Scrofuloderma results from contiguous spread of tuberculosis from an underlying focus such as a lymph node, bone or joint to overlying skin. Treatment is the standard antitubercular regimen.

Option by option

  • A. Tuberculosis verrucosa cutis

    Tuberculosis verrucosa cutis is an exogenous warty inoculation.

  • B. Scrofuloderma (correct)

    Correct. Extension from a deeper focus is the hallmark.

  • C. Lichen scrofulosorum

    Lichen scrofulosorum is an id-type tuberculid with small lichenoid papules.

  • D. Erythema induratum

    Erythema induratum presents as tender leg nodules.

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 B, Scrofuloderma. Scrofuloderma results from contiguous spread of tuberculosis from an underlying focus such as a lymph node, bone or joint to overlying skin.

Why is "Tuberculosis verrucosa cutis" not the answer?

Tuberculosis verrucosa cutis is an exogenous warty inoculation.

Why is "Lichen scrofulosorum" not the answer?

Lichen scrofulosorum is an id-type tuberculid with small lichenoid papules.

Why is "Erythema induratum" not the answer?

Erythema induratum presents as tender leg nodules.

What concept does this question test?

It tests Cutaneous tuberculosis: scrofuloderma in Dermatology. Treatment is the standard antitubercular regimen.

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 Cutaneous tuberculosis: scrofuloderma?

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.