Jp
Be careful how you interpret my post, I have not so much 'been through the system' as sidestepped it!
As to the tests, my problem is with vertigo/nausia rather than headaches, and I was refered by my GP to an ENT consultant. The company medical insurance paid for the tests. After the MRI, blood tests, hearing & balance tests, etc proved inconclusive I was further refered to a 'top banana' in London. After further tests and family history, the 'top banana' gave a most likely diagnosis of migraine. Treatment (beta blockers) is an option, but I don't want to go down that road for what is only a very occasional problem.
You mentioned that you know what caused your migraine. Can you tell us what? I've experimented with overdosing on red wine. port, cheese, chocolate, etc in varying combinations (all in the cause of medical science!), but have never provoked an attack.
regards,
Norm (an alias, as I'm sure you've gathered)