What Lichen Planus Looks Like: A Diagnostic Quiz

A 10-year-old boy presents with a history of nummular eczema and a recent 2-week history of a widespread rash. He has lichen planus, a challenging diagnosis because the differential is broad and, while common, the condition is seen infrequently in primary care practice.

Take this quick quiz to brush up on dermatology basics and the specifics of this inflammatory disease.

Note: If you would like more information on any of the questions, a link to the original article, “A Pruritic, Polygonal, Papular, Planar Rash on a 10-year-old Boy,” is provided on the last page of the quiz.

Question 1:

The correct answer is C. Purple, Polygonal, Pruritic, Planar, Papules, Plaques

Question 2.

The correct answer is B. Fifth disease

Question 3.

The correct answer is A. True

Question 4.

The correct answer is D. A, B, and C

Question 5.

The correct answer is B. 10%

Question 6.

The correct answer is A. The onset usually is chronic.

Question 7.

The correct answer is D. 8-12

Question 8.

The correct answer is B. False

For more information on all questions and answers, please visit “A Pruritic, Polygonal, Papular, Planar Rash on a 10-year-old Boy.”