Leprosy: sensory loss: 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 · Leprosy: sensory loss

Sample item

In a leprosy patch, which modality of sensation is usually the earliest to be impaired?

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

The answer and the reasoning

A. Temperature

Small unmyelinated and thinly myelinated fibres carrying temperature and pain are affected first, followed by light touch and later pressure and motor function. Bedside testing with test tubes of warm and cold water is simple.

Option by option

  • A. Temperature (correct)

    Correct. Temperature sensation fails first.

  • B. Two-point discrimination only

    Two-point discrimination is a late and subtle test.

  • C. Vibration

    Vibration is carried by large fibres and is lost late.

  • D. Deep pressure

    Deep pressure is lost late.

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, Temperature. Small unmyelinated and thinly myelinated fibres carrying temperature and pain are affected first, followed by light touch and later pressure and motor function.

Why is "Two-point discrimination only" not the answer?

Two-point discrimination is a late and subtle test.

Why is "Vibration" not the answer?

Vibration is carried by large fibres and is lost late.

Why is "Deep pressure" not the answer?

Deep pressure is lost late.

What concept does this question test?

It tests Leprosy: sensory loss in Dermatology. Bedside testing with test tubes of warm and cold water is simple.

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 Leprosy: sensory loss?

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.