He's been through tests, tests, and more tests, and he has a diagnosis.
Renal failure.
His kidneys are operating at 20% of normal and the doctors don't know why. A kidney biopsy is scheduled for Monday, and a specialist visited with us today and gave us worst case scenario (at least I hope it was worst-case). In the meantime he remains in the hospital as they try and get the 20 pounds (yikes) of fluid he put on in the last two weeks since we've been gone.
I'm not home much now, but I did take a picture of my flowers that look like thistles. I saw some in a planter box in Ketchikan just last week but theirs hadn't turned colors yet. Mine have.