What causes bilateral facial paralysis?

Patient's question:

My aunt was just carefully diagnosed with bilateral facial paralysis. Hello, what causes bilateral facial paralysis?

Doctor's answer:

Hello, according to the situation you described, if a thorough examination suggests bilateral facial paralysis, it is more likely to be a case of Guillain-Barré syndrome. Generally, facial nerve palsy caused by peripheral facial neuritis is rare. Therefore, the current condition should be treated with systematic and careful examination in the hospital. Further lumbar puncture may be necessary to determine if it is indeed a manifestation of Guillain-Barré syndrome.

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