John, have you tried a cold pack on the back of your neck?

The larger gel packs are very handy. I use them often.

The ones with gel in them are hard to find in drugstores now, so
I got my recent ones here:
http://www.amazon.com/3M-COLD-PACKS-...ds=3M+gel+pack

I use them on my wrists, and neck and lower back almost daily.
One 20 minute period is all that is needed to turn off the hyper nerve signalling.

Our bodies divide up sensations and assign them to different nerve paths. The cold sensing ones have priority so stimulating them blocks perception of heat. You can do this with ice pack or chemically with topical gels you rub on like Biofreeze.
This is a link to Biofreeze:
http://www.amazon.com/BIOFREEZE-Pain...ords=Biofreeze

Biofreeze is a professional "secret" that only physical therapists had and chiropractors. But now it has become available in other outlets thank heavens. It is wonderful...I use this on my feet and knees.

I find the ice pack on the neck is good for global discomforts in the whole body.

Don't forget you need that magnesium since you are diabetic. This is very important. The magnesium may fix some of your symptoms.
You will have to space any magnesium away from gabapentin/lyrica...by 2 hrs before or after.

Also I have to wonder about that diverticulitis...did you take antibiotics for that? If so which one(s)?