Good heavens, I hope not. My thought is that it is MS. My hope is that it is nothing and his symptoms go away. We need him to continue to ‘preach it’.
Polymyalgia rheumatica. This disease involves joints as well as tendons, muscles, ligaments, and tissues around the joint. Symptoms often include pain, aching, and morning stiffness in the shoulders, hips, neck, and lower back. It is sometimes the first sign of giant cell arteritis, a serious disease of the arteries which is also characterized by inflammation, weakness, weight loss, and fever. Giant cell arteritis may lead to blindness or stroke. While the hands and feet may be affected, this type of involvement is unusual.
Of all the possibilities listed at the site I visited, this is the only one that spoke to the symptoms that were indicated in Glenn's situation. However, note that it states it's unusual to have the hands and feet involved. I will check on the MS symptoms.
After checking, I can see where MS is being brought up as a possibility. There could be other reasons, though, and I hope that his doctors are checking for all possibilities including poison - he’s made a lot of enemies.