贝尔麻痹(Bells palsy)是指临床上不能肯定病因的、不伴有明显其它体征或症状的单纯性周围面神经麻痹。一、病因目前病因尚不明了,归纳起来有两种学说: 1、水肿学说:贝尔麻痹多在局部受冷风吹或着凉后发生,由于寒冷引起了营养面神经的血管痉挛,导致神经的缺血和毛细血管的损害而发生水肿;水肿进一步加重了神经受压和阴碍淋巴与血液的流通,形成恶性循环而导致面瘫。 2、病毒学说:有人认为本病是由某种病毒感染所引起,如单纯疱疹病毒、水痘、带状疱疹病 Bells palsy refers to simple peripheral facial paralysis not clinically definitive and without obvious signs or symptoms. First, the cause of the disease is not yet clear, summed up in two theories: 1, edema theory: Bell paralysis and more in the local cold or cold after the occurrence of cold due to the cold caused by facial nerve vasospasm, leading to nerve ischemia and Capillary damage and edema; edema further aggravate the nerve compression and obstruction of lymph and blood circulation, resulting in a vicious circle resulting facial paralysis. 2, Virology: Some people think that the disease is caused by a virus infection, such as herpes simplex virus, chicken pox, herpes zoster disease