I don't have complete information to respond. It appears that your son or daughter may have a hereditary disease that you're trying to deal with. After what you went through with your mother and father, I can't see why you would be faced with more.
I am totally sorry my Dear Friend. Let us keep him in our prayers for a safe journey to heaven.............GOD BLESS YOU and YOURS......I LOVE YOU MY FRIEND...Tony
Stay strong and write.
Ron
budd