For me it's not about the size of crowds. I can be quite happy sitting in a cinema with 100+ people, but absolutely anxious as hell around a small group of people. In many ways I like the anonymity of large crowds, the lack of expectation to interact; but I do have a problem if they're particularly noisy or "fast moving" ... I can't stand the shopping mall when it's busy, and I hate the supermarket.
I have recently had some experience with diazepam and found it helpful, but this prescription has now been stopped.
So I'm back to
a) only going to be around people when I absolutely *have* to, or feel like I can cope with it and
b) leaving as soon as I can't cope any more.
If I don't have the opportunity leave whenever I need to, that makes the whole situation a lot more difficult to cope with.
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Female. Dx ASD in 2011 @ Age 38. Also Dx BPD