Cause Of Peripheral Failure

Peripheral nerve is relatively resistant to radiation damage However, once occurred, peripheral nerve damage can be debilitating and even life-threatening. Cranial neuropathy after the completion of radiation has a low incidence as well as along latent onset .(Lo et al ., 2010 )

Radiation-induced fibrosis of neck muscle may be a secondary cause of cranial neuropathy. Lin et al.,2002 reported 19 cases of radiation-induced cranial nerve palsy and found that the most frequently involved nerves were the hypoglossal nerve, the vagus nerve and the recurrent laryngeal nerve.