Thank you for your reply.
I am little bit surprised at your diagnosis because two different consultants who examined me at St John's Hospital, Livingston near Edinburgh never mentioned Carpal Tunnel Syndrome - a condition I had heard of but did not know about in any detail. And neither did two of the doctors at my GP's surgery mention it as a possibility. I got the impression that the consultants tried cortisone because "it sometimes works".
However, you may well be right. I would add that In my original query I mentioned that certain movements caused pain - but it is difficult to think of them until they actually "happen" - and when I was boiling some water at lunchtime it was quite painful to lift the pan with my left hand to pour the water into a cup. (I am mainly left-handed but only about 60-40, although I play(ed) golf, cricket and throw right-handed).
Do you have any further comments in the light of the above?
Also, if you remain confident that it is likely to be Carpal Tunnel Syndrome how do I approach my GP diplomatically? Because I can appreciate that they are not too keen on patients who quote the internet about their condition. Having said that, I suppose it must be fairly common these days.
I look forward to hearing from you.