Hi Chris. What you described sounds like something I experience as well. Like you I am wondering what exactly it is. I had a bad experience a few weeks ago I am sure was a full-blown panic attack. But, sometimes I feel like I am having mini/mild attacks. I will start feeling really weird, like faint. I neck gets stiff, my thoughts start racing, it's like I am in my own world. I start to feel really bad, I start thinking negatively, and I start to feel really scared about
stuff the more I think about
it. Sometimes I shake even though I don't seem to be cold, other times I feel really hot and can feel myself turning red, and I start to sweat a little. I also have nervous habits when I feel these things, I play with my hands alot, my bracelets, and things like that. Sometimes it is a feeling I get that goes away after minutes, sometimes it lasts all day. I have alot of stress due to school and life in general, but it happens when I am not stressed really bad too so..
I am not really sure what it is. I have wondered if it really is panic attacks or symptoms of panic, but I haven't been diagnosed or anything. But, I would say it is.
I hope everything works out for you and you figure it out.