rationalskepticism.org

In a rush at work atm but briefly - a panic attack that seems to come from nowhere rarely does, there is some underlying trigger. Then you become very aware of any slight variations in your body, like increased breathing or pulse rate and this in turn causes the anxiety levels to increase, causing more bodily syptoms and so on and so on, round and round in a self-fuelling cycle. Yeah, maybe you've begun to realise what you're going through and it's panicked you?