Post-polio syndrome is an illness defined by a collection of symptoms that generally occur at least 10-20 years after infection with the polio virus. The hallmark of post-polio syndrome is new muscular weakness. This may present as weakness in the arms, legs, or trunk or difficulty with swallowing, talking or breathing if the muscles that control these functions are affected. Other symptoms of post-polio syndrome include muscle pain, fatigue and cold intolerance. It is not uncommon for polio survivors to have new weakness in muscles that were previously believed to be unaffected by polio. This may be because they really weren't sure which muscles were affected many years before, or because muscles were so mildly affected at first that doctors didn't detect it on physical examination at the time of the polio virus infection.
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