Facial nerve paralysis is a common problem that involves the paralysis of any structures innervated by the facial nerve. The pathway of the facial nerve is long and relatively convoluted, and so there are a number of causes that may result in facial nerve paralysis. The most common is Bell's palsy, an idiopathic disease that may only be diagnosed by exclusion.
We researched this topic for you and found the following best online resources. They are categorized into basic, advanced, and research level based on the extent of information you need. You will be taken to the respective websites by pressing on the links below.
http://ispub.com/ijns/2/2/11553 c pereira, e santos, j monteiro, a de araújo morais, c tôrres santos. Peripheral facial palsy: anatomy and physiology. An update. The internet journal of neurosurgery. 2004 volume 2 number 2.
http://www.aafp.org/afp/2007/1001/p997.html bell's palsy: diagnosis and management jeffrey d. Tiemstra, md, and nandini khatkhate, md, university of illinois at chicago college of medicine, chicago, illinois am fam physician. 2007 oct 1;76(7):997-1002
Kumar r, karthikeyan c v, singh ca, preetam c, sikka k. Iatrogenic facial nerve palsy "prevention is better than cure": analysis of four cases. Indian j otol [serial online] 2011 [cited 2016 may 10];17:170-2. Available from: http://www.indianjotol.org/text.asp?2011/17/4/170/94498
http://www.ajnr.org/content/15/3/479.full.pdf idiopathic, herpetic, and hiv -associated facial nerve palsies: abnormal mr enhancement patterns sabine sartoretti-schefer, werner wichmann, and anton valavanis ajnr 15:479-485, mar 1994 0195-6108/94/ 1503-0479