Psychotic disorders: induced delusional disorder: practice question

A Psychiatry 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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Psychiatry · Psychotic disorders: induced delusional disorder

Sample item

A woman begins to believe her neighbours are plotting against her after living with her sister, who has a persecutory delusional disorder. The two are socially isolated. This is:

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

The answer and the reasoning

D. Folie a deux (induced delusional disorder)

In folie a deux, a delusion is transferred from a dominant (primary) person to a submissive person in a close relationship. Separation of the pair often resolves the delusion in the induced person.

Option by option

  • A. Capgras syndrome

    Capgras is a delusion of doubles in an individual.

  • B. Munchausen syndrome

    Munchausen syndrome is factitious illness.

  • C. Ganser syndrome

    Ganser syndrome gives approximate answers, not shared delusions.

  • D. Folie a deux (induced delusional disorder) (correct)

    Correct. A shared delusion in a close pair is folie a deux.

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 Psychiatry question

What is the answer to this Psychiatry question?

The best answer is D, Folie a deux (induced delusional disorder). In folie a deux, a delusion is transferred from a dominant (primary) person to a submissive person in a close relationship.

Why is "Capgras syndrome" not the answer?

Capgras is a delusion of doubles in an individual.

Why is "Munchausen syndrome" not the answer?

Munchausen syndrome is factitious illness.

Why is "Ganser syndrome" not the answer?

Ganser syndrome gives approximate answers, not shared delusions.

What concept does this question test?

It tests Psychotic disorders: induced delusional disorder in Psychiatry. Separation of the pair often resolves the delusion in the induced person.

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 Psychotic disorders: induced delusional disorder?

Learn each diagnosis by its core features and its first-line treatment. Then use the flashcards and the other Psychiatry 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.