Hi. In 2010 I found out I had Chiari Malformation Type I. I had CMI surgery. Also had upper cervical replacement w/trinica plate in 2011. The symptoms you are experiencing are my side effects from both surgeries. I am under the care of pain management anesthesiologist. I receive greater occipital neuralgia nerve blocks 4 times a year and cervical facet. This Thursday I am getting a cervical facet. It relieves the burning pain and sharp pain for my upper neck and the base of my head. In 2014 my PMA sent me to see a specialist, Dr Ivica Ducic, Specializing in Peripheral Nerve Surgery. Unfornately I wasn’t a good candidate. I know how you feel the burning pain, sharp pain. The pain I have, is you say to yourself I have my good days and my bad days. I hope this is helpful. I hope you can find a PMA. Take care.