Test your diagnostic skills in our regular dermatology quiz. What is this ulcerating rash affecting an elderly woman’s hands?
An 80-year-old woman presents after developing painful eroded blisters on her hands (Figure 1). A culture of a skin swab has been performed and returned negative results for bacterial and fungal species. At presentation the patient is afebrile; she has recently been well, but she has been diagnosed previously with acute myelocytic leukaemia.