Sexually transmitted infections: lymphogranuloma venereum proctitis: 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 · Sexually transmitted infections: lymphogranuloma venereum proctitis

Sample item

A man who has sex with men has anorectal pain, mucopurulent rectal discharge and tenesmus. Years later he develops difficulty passing stool and a narrowed rectum. Which organism is responsible for the original infection?

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

The answer and the reasoning

A. Chlamydia trachomatis serovars L1 to L3

LGV proctocolitis from C. trachomatis serovars L1 to L3 causes chronic inflammation and rectal strictures if untreated. It is treated with doxycycline for three weeks.

Option by option

  • A. Chlamydia trachomatis serovars L1 to L3 (correct)

    Correct. LGV serovars of Chlamydia trachomatis cause proctocolitis and strictures.

  • B. Neisseria gonorrhoeae

    Gonorrhoea causes proctitis with purulent discharge but does not typically cause chronic stricture.

  • C. Treponema pallidum

    T. pallidum causes ulcers and rashes and does not produce chronic proctitis with stricture.

  • D. Haemophilus ducreyi

    H. ducreyi causes painful genital ulcers and a bubo, not proctitis.

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, Chlamydia trachomatis serovars L1 to L3. LGV proctocolitis from C.

Why is "Neisseria gonorrhoeae" not the answer?

Gonorrhoea causes proctitis with purulent discharge but does not typically cause chronic stricture.

Why is "Treponema pallidum" not the answer?

T. pallidum causes ulcers and rashes and does not produce chronic proctitis with stricture.

Why is "Haemophilus ducreyi" not the answer?

H. ducreyi causes painful genital ulcers and a bubo, not proctitis.

What concept does this question test?

It tests Sexually transmitted infections: lymphogranuloma venereum proctitis in Dermatology. trachomatis serovars L1 to L3 causes chronic inflammation and rectal strictures if untreated. It is treated with doxycycline for three weeks.

How hard is this question?

We tag it as a multi-step question: it asks you to combine more than one idea. 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 Sexually transmitted infections: lymphogranuloma venereum proctitis?

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.