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Bell's palsy, characterized by sudden weakness or paralysis of one side of the face, is believed to result from viral infections, particularly the herpes simplex virus. The exact cause is not fully understood, but factors like stress, viral reactivation, and a family history of the condition may contribute. It is not contagious, and while the exact mechanism isn't clear, it often follows a viral illness. Most people recover within weeks to months, although some may experience residual effects.

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3mo ago

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