About once a month for the last six months or so, I've been getting these weird kind of attacks. I'll be sat at work for example, and then this really strangely familiar kind of dream pops into my head (I'm sure that's where it came from, a dream), and then suddenly I just feel really strange.

After a couple of seconds I start going dizzy, sweaty and feeling really sick, to the point I have to swiftly go to the toilets because it feels like I'm about to pop. Never sick though, and after a few minutes with my eyes closed trying to breathe it out, I calm down and return to normal.

It's so strange, and has happened quite a few times now I'm a little curious to know what's going on. Anybody got any ideas?

Thanks