I cannot address the others issues,but the weakness in your arms does sound familiar. I had a flare up of extreme and debilitating weakness in my hands and arms before I was diagnosed with hereditary neuropathy. It was later found to be caused by pinched nerves which seem to accompany my condition, and the weakness comes and goes. Right now I am having difficulty straightening my elbows, particularly the right, and have more pins and needles and weakness than usual in my hands and arms. All this to say, it may improve as mine did from the first flare six years ago.

On another note, any ideas, Mrs. D., on why Parkinson's seems to be showing up in younger people? It seems more prevalent too.