Guillain-Barré syndrome is a disorder in which the body’s immune response, typically to an infection, causes nerve damage. The syndrome is rare, affecting about one to two people in 100,000 each year. It can present as a very mild case of brief weakness to devastating paralysis, affecting the muscles that allow a person to breathe on their own. Fortunately, most people eventually recover from even the most severe cases of Guillain-Barré, although some are left with some level of weakness.

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