ComplicationsBy Mayo Clinic staff
Although a mild case of Bell's palsy normally disappears within a month, recovery from a case involving total paralysis varies. Complications may include:
- Irreversible damage to your facial nerve
- Misdirected regrowth of nerve fibers, resulting in involuntary contraction of certain muscles when you're trying to move others (synkinesis) — for example, when you smile, the eye on the affected side may close
- Partial or complete blindness of the eye that won't close, due to excessive dryness and scratching of the cornea, the clear protective covering of the eye
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