How to Tell if you may be eligible for SSDI or SSI by the Social Security definition of disability, which is:
“The inability to do any substantial gainful activity (SGA) by reason of any medically determinable physical or mental impairment,
To be eligible for SSDI the person has worked at least 5yrs (20 quarters) out of the last 10 yrs., they DO NOT have to be consecutive. The duration of worked required can fluctuate based on the age of the onset of disability.
SSI is a NEEDS based program, based on income and assets.