LETTER TO THE EDITOR R. Ramessur, Corresponding Author Ravi.ramessur@nhs.net Department of Dermatology, Watford General Hospital, Hertfordshire Hospitals NHS Trust, Watford, Hertfordshire, UK Corresponding author: Dr Ravi Ramessur Email: Ravi.ramessur@nhs.net Search for more papers by this author N. Saffar, orcid.org/0000-0003-3890-4833 Department of Dermatology, Watford General Hospital, Hertfordshire Hospitals NHS Trust, Watford, Hertfordshire, UK Search for more papers by this author B.