Post-polio sequelae (also called post polio syndrome or PPS) are often disabling symptoms that occur in many polio survivors much later in life, about 35 years after the poliovirus attack. The symptoms may include overwhelming fatigue, muscle weakness, chronic muscle and joint pain, sleep disorders, as well as difficulty swallowing and breathing.
You can learn more about PPS by reading The Post-Polio Syndrome Fact Sheet.
Post polio sequelae constitute a medically determinable impairment, and certainly can provide the basis for a finding of Social Security disability. See Social Security Ruling 03-1p.
Very serious PPS symptoms may meet medical listing 11.11 at step 3 of the sequential evaluation process. More often however, the cumulative and interactive effects of all of the individual's impairments, including PPS symptoms, will be assessed in determining that claimant's residual functional capacity.
Tens of thousands of people in the United States suffer from post polio sequelae. I was unaware of how serious a condition it can be until recently, when I spoke with a prospective client on the phone, and did some research.