I am a young adult with autism (Asperger's to be precise). While there are many resources on how to travel with kids with autism, resources on how to do so if you have it yourself are rare to nonexistent.
Anyway, I have a lot of trouble with security checks. The fact that I have to separate from my things (including my plush, which helps me in stressful situations), go through a scanner and pick up my things again before someone runs off with them completely stresses me out. I feel extremely pressured by the people behind me and it ends up being a very uncomfortable experience.
I have a couple countermeasures currently. I organise my bags at home, so I only need to take my laptop out. I make sure there is nothing in my pockets beforehand and I make sure I wear a 2 piece outfit. Nevertheless, it still is a terrible experience. Going through currently takes more energy from me than any other part of a trip. Is there anything I can do to make this a smoother experience?
I hold a Dutch passport. I frequently visit the UK and somewhat rarely (once or twice a year) other countries.