Polio (poliomyelitis) is a viral illness that damages nerves that control muscles, resulting in muscle weakness. In severe illnesses, a person can lose the ability to move both arms and legs (paralysis) and may be unable to breathe without help.

Symptoms of polio include:

Polio is now rare in developed countries, because most children receive immunization against the virus.

ByHealthwise Staff
Primary Medical ReviewerAnne C. Poinier, MD - Internal Medicine
Specialist Medical ReviewerKarin M. Lindholm, DO - Neurology
Last RevisedMarch 24, 2011

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