Byline: Daqiang. Qin, Zhiyuan. Ouyang, Wei. Luo
Bell's palsy is a peripheral facial palsy of sudden onset. The etiology of Bell's palsy is unknown and hereditary components may play a role in familial recurrent Bell's palsy. We report three families in which eight patients had a total of 12 episodes of typical Bell's palsy. The pathophysiology of familial recurrent Bell's palsy is discussed.
Bell's palsy, or idiopathic facial paralysis (IFP), is the most common cause of unilateral, lower motor facial palsy. The etiology of IFP remains uncertain. Since the familial occurrence first described in 1887, hereditary factors have been considered to play a role in the etiology of the disease.[sup] , Here we report three families in whom eight patients have had a total of 12 episodes of Bell's palsy.
Family one [Figure 1]a: Four family members had typical Bell's palsy. The proband, a 51-year-old male, presented with an acute right facial muscle weakness and right-sided facial and tongue numbness of one day duration. He had an episode of right facial weakness one year back which resolved after treatment with oral prednisone. On examination he had right lower motor facial weakness with Bell's phenomenon. One of his brothers had two episodes at the age of 32 years and 45 years, his sister had a single episode at the age of 51 years, and his father, who was deceased, had an episode at the age of 40 years. In all of them the facial weakness resolved within a period of one month...
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