What Is the Cause of This Rash?

figure 1

A 16-year-old girl presented with a 1-month history of a slightly itchy rash on the extremities and trunk (Figures 1 and 2). The rash had appeared after an upper respiratory infection that had resolved uneventfully. She was otherwise healthy. 

figure 2

What is the cause of this rash?

a. Scabies
b. Nummular eczema
c. Pityriasis rosea
d. Guttate psoriasis
e. Follicular eczema

To learn the answer, go to page 2

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