What Could Be Responsible For This Upper Extremity Rash?

A 30-year-old woman with interstitial pneumonitis was being treated with prednisone (initially 20 mg, which had been tapered to 10 mg) and azathioprine. She presented with a 2-month history of rash on the antecubital fossa that has a burning sensation. She has failed therapy with a topical azole antifungal, pimecrolimus, and sulfacetamide lotion, 10%.







What could be responsible for this woman’s upper extremity rash?

A. Atopic dermatitis
B. Psoriasis
C. Dermatophyte infection
D. Cutaneous candidiasis
E. Impetigo
F. Fixed drug eruption

To learn the answer, go to page 2

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