This is the first reply to my post. When my husband was seen at Mayo Clinic in Jan.of 2015 they gave him 3 to 4 years to live. They did not say what the cause was. He is now walking with a cane and in the evening with a walker if he is tired. He is progressing. He saw a movement specialist at Mayo Clinic. He said they were doing stem cell research. We will contact him in Aug. to see if there is anything different going on. I'm so sorry for you. My husband is 77 and at least has had a full life. It is hard on him as he was very active. We don't know whether to go back to Mayo Clinic or not. We will let our local doctor contact them.<br> God's blessings on you.<br>