Bell’s病系由茎乳突孔内急性非化脓性神经炎引起的周围性面神经麻痹。表现为急性起病，一侧面部表情肌突然瘫痪，可于数小时内达到高峰，伴同侧耳后、耳内、乳突区或面部轻微疼痛，一侧额纹减弱或消失。多数患者可在几周内恢复，但部分患者可因失治或误治，导致面神经麻痹恢复不全，出现瘫 Bell’s disease is a peripheral facial paralysis caused by acute non-purulent neuritis in the styloid process. The performance of acute onset, one side of the facial muscles suddenly paralyzed, peak within hours, with the ipsilateral ear, ear, mastoid area or facial minor pain, one side of the pattern weakened or disappeared. Most patients can recover within a few weeks, but some patients may be due to failure or misdiagnosis, leading to facial nerve paralysis incomplete recovery, paralysis