Bell's palsy is an acute condition that causes weakness or paralysis to the muscles of one side of the face. The weakness or paralysis can also affect the eyelid, meaning that someone with the condition cannot close their eye. The cause of Bell's palsy is unknown, although many researchers believe that the herpes virus is responsible.
How common is Bell's palsy?
Bell's palsy is a relatively rare condition. Published figures vary, but in England and Wales it is estimated that every year, 25-35 out of every 100,000 people develop Bell's palsy. The condition usually develops between 15-40 years of age, and men and women are equally affected.
Bell's palsy is more common in pregnant women and those with diabetes. The reasons for this are unclear.
Prognosis
The prognosis for Bell's palsy is usually favourable, with 85% of people making a full recovery within nine months, and most people with the condition noticing a marked improvement in their symptoms within three weeks.
Steroid medications are sometimes used to speed up the recovery process. It is important to take good care of the affected eye during the recovery process.
