STI: treatment of chancroid: 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 · STI: treatment of chancroid

Sample item

A man has multiple soft, painful genital ulcers with a tender inguinal bubo. Which single-dose regimen treats chancroid?

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

The answer and the reasoning

A. Azithromycin 1 g orally

A single oral dose of azithromycin 1 g cures chancroid, and ceftriaxone 250 mg intramuscularly as a single dose is an alternative. Penicillin does not cover Haemophilus ducreyi.

Option by option

  • A. Azithromycin 1 g orally (correct)

    Correct. Single-dose azithromycin is effective for chancroid.

  • B. Doxycycline 200 mg orally

    A single dose of doxycycline is not a recognised chancroid regimen.

  • C. Metronidazole 2 g orally

    Metronidazole treats trichomoniasis and bacterial vaginosis, not chancroid.

  • D. Benzathine penicillin G 2.4 million units intramuscularly

    Benzathine penicillin treats syphilis, and H. ducreyi is not reliably susceptible to it.

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 A, Azithromycin 1 g orally. A single oral dose of azithromycin 1 g cures chancroid, and ceftriaxone 250 mg intramuscularly as a single dose is an alternative.

Why is "Doxycycline 200 mg orally" not the answer?

A single dose of doxycycline is not a recognised chancroid regimen.

Why is "Metronidazole 2 g orally" not the answer?

Metronidazole treats trichomoniasis and bacterial vaginosis, not chancroid.

Why is "Benzathine penicillin G 2.4 million units intramuscularly" not the answer?

Benzathine penicillin treats syphilis, and H. ducreyi is not reliably susceptible to it.

What concept does this question test?

It tests STI: treatment of chancroid in Dermatology. Penicillin does not cover Haemophilus ducreyi.

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 STI: treatment of chancroid?

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.