Thank you - I have an appointment with a new neurologist next month and hoping it means a new discussion versus a general rubber-stamping of maintaining the unknown from the past. As long as he talks and explains, that will be progress. I've only been told "it COULD be a post infection disorder or a vitamin deficiency; but without knowing for sure we can't treat it with IVIG". But I have a list of questions, and I thank you for your input. I'll be happy with 20 second logical responses and reasonings; I'm learning a lot can't be done, and want to make sure diagnostics support that conclusion. I should resume my aqua therapy here probably as it continues to warm up the next couple of weeks; I've missed it!