My doctor had never seen bumps like the ones on my back. They seemed like cysts to him, and he was guessing that the blue/purple color was due to the growth and stretching of the skin.
He said he'd arrange for a local surgeon to remove them on an outpatient basis.
Then he went to work on the fatigue problem. He assured me that what I was describing was really a problem, and that it was not just age slowing me down. As I suggested possible reasons, he reminded me that it was his job to find the problem, not mine, and he assured me he would.
He scheduled a stress test for Friday, took some blood, and sent me home.