Papulosquamous disorders: practice question

The best answer is D, Lichen planus. Lichen planus presents with pruritic, purple, polygonal, flat-topped papules, often on the wrists and ankles, with fine white lines on the surface (Wickham's striae) and white lacy lesions in the mouth.

Pityriasis versicolor shows fine scaling patches caused by Malassezia.

Psoriasis shows silvery scale and Auspitz sign.

Vitiligo shows depigmented patches without scaling.

It tests Papulosquamous disorders in Dermatology. The correct option holds because: Correct. These white lines are characteristic of lichen planus.

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.

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.

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.