I was just in Adelaide, and my friend showed me a newspaper article about TN, where Dr Lorimer Moseley was commenting. He is evidently researching the connection between pain and brain, where the goal is to train the brain to respond differently to pain signals. I read a study I found on Google scholar, and he has had substantial success with chronic pain sufferers.
For more info, check out the project web page: http://www.bodyinmind.org/ or type his name into a research search engine such as scholar.google.com or pubmed.com.
They are Adelaide based. My friend tried to get me an appointment, but there is a one-year waiting list. Guess I will plan my next holiday well in advance...