A persistent submammary rash

Case presentation

A 70-year-old woman presents with a persistent, uncomfortable and slightly eroded submammary rash that has been present for several weeks (Figure 1). She complains of a burning sensation in the rash.

The rash has been treated with a potent topical corticosteroid, without improvement. A skin scraping and culture have not shown evidence of a fungal infection.

The patient’s current prescribed medications are telmisartan, simvastatin and aspirin, and she also takes paracetamol for osteoarthritis. She is afebrile, and blood tests show a normal white cell count.