What causes GBS?

Little is known about the cause. We do know that about 50% of cases occur shortly after a microbial infection (viral or bacterial), some as simple and common as the flu or food poisoning.  Some theories suggest an autoimmune trigger, in which the patient’s defense system of antibodies and white blood cells are called into action against the body, damaging myelin (nerve covering or insulation), leading to numbness and weakness.

How is GBS diagnosed?

To confirm a diagnosis, two tests may be performed:

- A lumbar puncture looking for elevated fluid protein

- Electrical test of nerve and muscle function

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