I have always had a small amount of anxiety over social situations and new places/people/situations, just because I'm unsure what to do/say, and feel slightly inept. Large crowds have always been difficult for me, often because I feel like I can feel the thoughts and emotions of all the people around me and it's overwhelming to me.

I also have problems with paranoia, which creates more problematic anxiety issues. If I feel like someone is constantly trying to hurt me, or I'm being communicated with telepathically, etc., I find it difficult to be calm and feel constantly anxious. Any places with "busy" conversation, multiple conversations at once, or bustling activity are difficult environments for me to remain calm.