Well, folks, I have finally had the upper and lower endoscopies I have been putting off for a long time. Turns out I have Celiac Disease (they confirmed by biopsy) but that everything else is okay. My anemia had gotten so bad they assumed there was bleeding somewhere, but Celiac can cause iron-deficiency anemia. I'll just have to revamp my diet now and see how it goes.
I'm sure anemia has contributed to the fatigue I've been experiencing. I don't know about anxiety, depression, confusion. Hopefully a change in diet will help them all. And stop the itching.