Paroxysmal purple palmar macules with a rare aetiology

R. E. Watchorn, S. Babu, F. Lewis, E. Calonje and S. M. Taibjee Department of Dermatology, Royal Devon and Exeter NHS Foundation Trust, Exeter, Devon, UK; Department of Dermatology, Dorset County Hospital NHS Foundation Trust, Dorchester, Dorset, UK; Department of Dermatology, St. John’s Institute of Dermatology, Guy’s Hospital, London, UK; and Department of Dermatopathology, St. John’s Institute of Dermatology, St Thomas’ Hospital, London, UK