ARose, the neurologist exact words to me were, "This is classic for vaccine reaction, and it may take two years or more to resolve." I was never diagnosed with anything else. Frightening, frustrating, I don't know how else to describe it. For a long time any kind of exercise or exhertion would make the symptoms flare. You know you need to keep moving, but are rewarded by feeling worse. Patience, rest, moderate activity, good nutrition, and staying the course. That's all I can recommend.