Simultaneous bilateral Bell's palsy during pregnancy.

Idiopathic bilateral facial paralysis, although rare, seems to be more frequent during the last trimester of pregnancy and in the early puerperium. Unlike unilateral facial paralysis where the cause is mostly idiopathic, bilateral facial palsy is less often idiopathic, and various etiologies had been suggested.We present herein, an unusual case of simultaneous idiopathic bilateral Bell's palsy during the third trimester of pregnancy.