Clinical Challenge: A Rash That Doesn't Respond to Steroids

A 44-year-old man presents after treatment for an irritated seborrheic keratosis on his back. An incidental finding is an extensive but asymptomatic rash noted on his chest and abdomen. This was diagnosed elsewhere as eczema, and the patient was placed on oral prednisone and a topical steroid, the latter of which he has continued to take for several weeks despite ...