question: For a little over a year now I have: Numbness  to my chin, lower lip that is constant, like when you get a shot novocaine by the dentist. I have had no dental work in over two years and no problems with my mouth such as sore's, hit or had any facial accidents. In 2000, I had Tonsil cancer and had one tonsil removed and had over two months of radiation & chemo. In 2007, 08 & 10, I worked as a Security Contractor in Iraq.