Bell’s Palsy (Facial Paralysis) Signs & Symptoms (& Why They Occur)

Bell's Palsy, also known as idiopathic facial paralysis, involves unilateral paralysis of facial muscles due to cranial nerve #7 dysfunction. The exact cause is unclear, but viral infections are suspected. Symptoms include acute onset facial paralysis affecting both upper and lower muscles, numbness, tingling, ocular pain, blurred vision, tearing issues, taste disturbances, decreased salivation, ear pain, and hyperacusis. These symptoms occur on the affected side due to the facial nerve's role in muscle control, taste, and hearing.

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