Pain at MVD site year and half after surgery

I have type I TN and had MVD Oct 9 2012. Last few episodes while I was having facial pain I started to get a painful throbbing feeling right behind my ear. Never had this before. What the heck could be the cause of this new feeling?

This sounds just like what I got today. Almost a year after my MVD I have pain at the surgical site.

Did you get relief? Did you find out what it was?