Footnotes

• Contributors AMP is the first author, she drafted the first manuscript. RA edited the manuscript and gave feedback with regards to the intellectual content. HS contributed to the plan and design of the manuscript as well as editing it. AB is the consultant who treated the patient who contributed to the idea, design of the manuscript, acquisition of data by obtaining medical photography as well as consent, and she edited the final draft of the manuscript. AMP and AB consented the patient.

• Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests None declared.

• Patient consent for publication Obtained.

• Provenance and peer review Not commissioned; externally peer reviewed.