Hello xtczero- Many of the symptoms that you describe as well as your experience and the doctors responses seem similar to my own. I am also the same age as you, and was previously very active like you. I have had symptoms for 2 years including the sudden horse voice upon exertion. I was even diagnosed with vocal fold atrophy (which sent me into a complete panick) only to have that diagnosed reversed 6 months later because the atrophy "healed". The ENT's were very puzzled. I have been extremely proactive in regards to seeing every specialist I can in every field. I have exhausted all options on the neurological front and my neuro has said that he thinks my issues are metabolic or mitochondrial but not neurological in nature. Now I am seeing specialists in these fields as well as a few others. I like your advice. I agree and believe it. I will not give up until I get a diagnosed of something or I recover on my own (which isn’t likely at this point but I remain hopeful). Please keep us posted on where your journey takes you. Good luck to you!
-CB
-CB