Thanks for all the responses. Sounds like I am definitely not alone. I am not sure how much benefit I will find from seeking help now, but I do think life would have been a lot smoother if I had both giftedness and other exceptionalities recognised and supported when I was young. I am hoping it is not to late to get some benefit now.

The question of the benefit of diagnosis is a good one. I definitely think it will end up being positive for DS in the long run. Although we have been in the middle of a storm of DS's angry outbursts for the last while, and it is hard to remember that their is a long run.

Sorry, not much of a response to all of your great posts, but I am a bit beaten down by it all at the moment.