A 46-year-old white male with a long history of atopic dermatitis was admitted to the hospital for urinary frequency and incontinence considered secondary to his multiple sclerosis. He developed a scalp rash and atopic dermatitis was again diagnosed. The clinical presentation, however, did not improve with a clobetasol and tar shampoo regimen. He again presented with ear pain and a painful rash. What's your diagnosis?
Photos courtesy Dr. Paul A. Krusinski