Had my neurologists registrar last visit. I gave up half way through and asked for my Dr. He went and go him from whatever he was doing next room, he gave me the simple answers I needed, as in No, no cause found yet. But want you to restart physio now. So simple. My Dr got report as does. Told him what happened, and that registrar would probably be a good taxidermists or mortician, where he didn't have to use his learning with live people. Some should choose research in a lab rather than patients .Dont want to go back now. If after all scans, mris, blood tests and genetic testing there is no which type, and some are unknown forever, cant see a reason to go.