My father has been on peritoneal dialysis for sometime now. He connects to the machine over night, this is done at home. Lately, he s been extremely weak and tired. He has started using a walker. He doesn t complain about dizziness or pain. He doesn t really want to eat other than a can or two of Nepro. My mother took him to the hospital and they ran some tests and everything came out fine. Other than giving him vitamin b-12, what can I do? What s going on? Does he have uremia? Please help.