Welcome to our wonderful community, Snowdrop (is that a nickname of yours haha)! Looking at your story, it sound like you’ve had a fair share of complications and procedures throughout your life - and I am sure that your resilience will allow you to overcome PsA just like everything else you have dealt with. I hope that your new treatment will give you the results you great results - so do feel free to keep us posted and get involved with the discussions of other fellow members on this forum.
Additionally, if it happens to interest you, our network also has a community for ADHD which you can find right here: https://www.lifewithadd.org/
Apart from that - good luck and don’t hesitate to contact me if you have any questions!