1. Yes! I find that if I am in a situation like that and can't get out of it until later that it is helpful to find a private bathroom (or some similarly individual space) in order to collect myself. Maybe you could try something like that?

2. I've learned a lot about how to avoid situations like this, but I also have a long way to go. For me, it still happens…I'd say about 75% of the time when I go out to crowded public places.

3. I'm guessing that people without this diagnosis can experience the same problem as well. It is probably less frequent and less severe, though, unless they have other issues…like agoraphobia, for example.