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.
The first month counted as part of the waiting. period can be no more than 17 months before the month of application and thus, retroactive. benefits are limited to 12 months from the date of application. 1 For more information on the SSDI program, see CRS Report RL32279, Primer on Disability Benefits: Social Security.