Wow Bren - you put into words what I have had happen a few times. Starts with increased heart rate - mind thinks `ay up, summits not right.....` and so forth. I can get this on shallow dives (not the panic but the physical manifestations) and can now control it with `ah - here comes the buzz` thoughts - amazing how it disappears - even thought it might be a manifestation of narcosis.
Also, in line with `controlling it` I focus on my camera settings and away it goes......wierd !!
The main thing I have learnt is to recognise that it will not hurt me.....treat it like a buzz and maintain focus on something (even a stone at Cape which I did during training)
I still think its linked to narcosis in some way
Thoughts anyone
?