Under title II and title XVI, we consider a person disabled under Social Security
rules if he or she has a medically determinable physical or mental impairment (or
combination of impairments):
that prevents him or her from doing any substantial gainful activity (SGA), and
has lasted or is expected to last for a continuous period of at least 12 months, or
is expected to result in death.
NOTE: The definition of disability also applies to persons applying for child’s insurance
benefits based on disability before age 22 and for disability benefits payable after
December 1990 as a widow(er) or surviving divorced spouse.