Posting here for traffic because I have never heard of this. I guess my AIBU is that this should be far, better known in the UK and in fact shouted from the rooftops. How many children are being completely misdiagnosed?
PAN is Paediatric Acute-onset Neuropsychiatric Syndrome.
Here is a link to a BBC News article that explains the basics:
www.bbc.co.uk/news/uk-scotland-edinburgh-east-fife-46989099