Thank you all again! Rita - your description of your second injury sounds scarily familiar, as well as your reactions to it - I think that something similar may be happening for me (certainly I have a frontal brain injury, the severity of which is yet to be ascertained). I am lucky in that to get to any shops I have a minimum of a five mile drive, so satisfying cravings is not as easy as popping out of the front door, and I really have been trying to stay lower carb but, as you say, control seems to be non-existent in situations where I simply wouldn't have had to even consider an ounce of self-control beforehand; very strange indeed. So far, whilst I haven't been VLC, I haven't been consistently very high carb (thankfully), so I think I shall try to ease back into lower carb - a tiny bit lower every day - and see how that goes. Nora Gedgaudas has very good advice, and a re-read of her book definitely seems in order. I guess the only thing to do is to take each day at a time and do the best I can, and accept that healing may take some time.
Thank you all so much again for the good advice and the good wishes! I really had been thinking I was going out of my mind and it was only when I got the results of the CT scan yesterday that I started to wonder whether the two could be connected.
Rita - I hope you're back on track and that your shoulder heals quickly, too.