When people refer to "Social Security," they general mean retirement benefits. SSDI is Social Security Disability Insurance, which is paid from the same fund, but available only to disabled people...
that is likely a yes since there are usually more limited to the types of work they can do, mostly social and physical. Plus the developmental delays in autism can make it difficult for holding a job.
Once you reach retirement age, your Social Security Disability benefits convert to regular retirement benefits, payable at the same rate. You cannot collect an additional amount due to disability. It...