I’ve been using ‘PV’ as shorthand for my condition because I always think of it as ‘Post Viral’, however. . .
From my reading, the most commonly-used and accepted term at present is ME/CFS, so that’s what I’m going to switch to. This is done in the hope that more people will recognise and understand the abbreviation, and be more comfortable with it. As well as using it in new posts, I will be going through old pages and posts to change it over.
My apologies for any confusion this has caused or will cause.