My husband has similar complaints. He was diagnosed with Hep C 4 years ago, we don't know who long he has had it. He complains of alot of joint pain, leg pain and some back pain. He does not have diabetes but his sugar is minimally elevated. Unsure what causes the pain other than it is a virus and your body is reacting to it. Pleae let me know if you find out anything that can help. Some days, my husband is extremely tired and in pain.