Steve,
Well, I just made an appointment for this issue. I am 4 yrs out and this started last summer.?? I thought I would have had this when I first finished treatment, not 4 years later.
I have the tingling, burning & pain feelings. I also had the electric shocks off and on. I am also getting this in my hands as well. If I am up and moving around, it is better. At night is the worst. I do take Aleve, or I will take Amitriptyline which is for Fibromyalgia. I take this only at night to help me sleep. I wish I had some answers for you, but I don't, just understanding how you are feeling. Maybe someone else will give us some answers.. take care. smile
I had shingle about a year and a half ago. I am wondering if this is what started it all? I know how you feel.

2004 SCC R.tip 1/4 tongue Oct. 2005 R. Neck SCC cancer/Chemo Cisplatin 2x/8wks. Rad. Removed Jugular vein, Lymph gland & some neck muscle. TX finished 1/20/06... B.Cancer 3/29/07 Finished 6/07 Bi-op 7/15/09 SCC in-situ, laser surgery removed from 1st. sight. Right jaw replacement 11/3/14. 9 yrs cancer free as of Jan. 2015