Hi Terry, thanks, I did tell him at the first appointment when I asked for a brain scan, along with a list of other things and although he said he had never seen it before he was not interested. It was at the second appointment after the scan that I forgot to ask about it again. I've googled for hours on end but can't find any mention of drifting apart from when it is accompanied by pronation of the wrist. Perhaps I'll take off one day! Best wishes Lily