Papulosquamous disorders: juvenile plantar dermatosis: 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 · Papulosquamous disorders: juvenile plantar dermatosis

Sample item

A 9-year-old atopic boy has symmetrical shiny, glazed, fissured erythema over the forefoot and toe pulps, sparing the web spaces. It is worse in winter and with synthetic footwear. What is the diagnosis?

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

The answer and the reasoning

B. Juvenile plantar dermatosis

Juvenile plantar dermatosis is a friction and sweat-related dermatitis of the forefoot in atopic children. Cotton socks, emollients and topical steroids help, and fungal tests are negative.

Option by option

  • A. Pitted keratolysis

    Pitted keratolysis shows malodorous crateriform pits on the weight-bearing areas.

  • B. Juvenile plantar dermatosis (correct)

    Correct. Glazed forefoot dermatitis sparing the webs in an atopic child is juvenile plantar dermatosis.

  • C. Tinea pedis

    Tinea pedis involves the toe webs and shows hyphae on KOH.

  • D. Palmoplantar pustulosis

    Palmoplantar pustulosis shows sterile pustules in adult smokers.

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 B, Juvenile plantar dermatosis. Juvenile plantar dermatosis is a friction and sweat-related dermatitis of the forefoot in atopic children.

Why is "Pitted keratolysis" not the answer?

Pitted keratolysis shows malodorous crateriform pits on the weight-bearing areas.

Why is "Tinea pedis" not the answer?

Tinea pedis involves the toe webs and shows hyphae on KOH.

Why is "Palmoplantar pustulosis" not the answer?

Palmoplantar pustulosis shows sterile pustules in adult smokers.

What concept does this question test?

It tests Papulosquamous disorders: juvenile plantar dermatosis in Dermatology. Cotton socks, emollients and topical steroids help, and fungal tests are negative.

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 Papulosquamous disorders: juvenile plantar dermatosis?

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.