I felt quite shocked/guilty when I found out as I tend to always think 'is it hormones?' (perhaps too much so) when someone has those sorts of issues. I think with her, the anxiety was so extreme that, combined with the lack of obvious physical symptoms (no period pain, no acne etc), I - like my colleagues - only considered a psychiatric cause. It was interesting to hear the person who told me (I wasnt involved directly) say it has now been classified as a 'physical illness' as opposed to psychiatric.
I ummed and ahhed about posting this, but do genuinely think it's an important issue and hope others could be helped. I have kept it as anonymised as possible.