I'm not saying don't investigate. Its been ten years for me, and I'm still investigating. But the numbers are clear: usually there is no clear cause except a po

I'm not saying don't investigate. Its been ten years for me, and I'm still investigating. But the numbers are clear: usually there is no clear cause except a poorly understood change in the nervous system. The answer for most people is, "I don't know," with the current sophistication of medicine. You can't try harder and find the answer because there is no answer at this time for most people.