Footnotes

• Twitter @azzam9963

• Contributors NS drafted the manuscript, edited the figures and tables, and edited the final manuscript. AI prepared the figure and highlights, and drafted the pathology sections of the manuscript and figure legend. TA prepared the neurophysiology tables. PS conceptualised the manuscript and made significant revisions. All authors commented on the final version of the manuscript and approved it for publication.

• 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.

• Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

• Competing interests None declared.

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