Thanks all for your advice. Really appreciated, guys. I'll contact the BMC ("Climb Britain"?) too.
Yes - as a diabetic, I've been throwing out the "good" habits on the hill- powerade, choccy cereal bars, bananas etc, - as this isn't "normal" life..... I've been self-testing my blood sugar levels (with my diabetic kit) (as I did last year when the same thing happened), and they're as normal as usual, ie. a bit high, but they would be, as i'm unable to process sugar normally, because I'm a type 2 diabetic.
Salt - yep good idea..... i'll try that
I don't think I had heat stroke, but I've read that link, cheers.
I found this & have several symptoms, including the dry skin (on face / forehead) - totally realise I may be wrong, of course:
http://adrenalfatiguesolution.com/adrenal-fatigue-symptoms/
- one of the things I noticed on our first foray up, was that we quickly found the going tougher than expected, and I had a novice with me, and I was not dealing with the "stress" of the situation as well & comfortably as I would expect to. Eg. I was worrying about possible accident outcomes like her tripping & falling off (it was an exposed ridge). So I wonder if adrenaline at altitude (2400m..... hmmm.....) wasn't firing normally ?
Anyway - back to my book & rest. Again, thanks all.