The bubonic plague was a painful disease, with black buboes, or swellings, in the groin and armpits, which lasted up to a week. There was some chance of surviving if the buboes burst.
As of 2015, full retirement age is 67 if you were born after 1960. The amount you receive doesn't change because disability benefits were calculated based on what you would receive at retirement age. However, you may see an increase if Social Security provides a cost of living increase.
If you are approved, you can receive up to twelve months of Social Security Disability back pay for months prior to your date of application. When you are trying to figure how many months of back pay you will receive, count up the number of full calendar months between when your disability began and when you expect your first check. Then subtract five months. You have to subtract five months because Social Security does not pay the first five full calendar months of disability.