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Autoimmune Disorders

What Is Guillain-Barré Syndrome?

Hilary WeissmanMandy Armitage, MD
Written by Hilary Weissman | Reviewed by Mandy Armitage, MD
Updated on October 1, 2025
Reviewed by Mandy Armitage, MD | October 1, 2025

Guillain-Barré syndrome is an autoimmune disorder where the immune system attacks the nerves by mistake. The exact cause is unknown, but it tends to develop after certain triggers, such as some infections, procedures, or vaccinations. A majority of patients make full recovery within a few years.

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Hilary Weissman
Written by:
Hilary Weissman
Hilary Weissman has been a health writer for the past 6 years. She was a senior copywriter at WW (Weight Watchers) before joining GoodRx and was also a copy editor in S&P Global’s structured finance ratings group for 3 years prior.
Mandy Armitage, MD
Reviewed by:
Mandy Armitage, MD
Mandy Armitage, MD, has combined clinical medicine with her passion for education and content development for many years. She served as medical director for the health technology companies HealthLoop (now Get Well) and Doximity.

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