Hello Doug...

What kind of mag are you taking? If it is magnesium oxide, it won't really work. If you switch to another type of magnesium, it may help.

Twitching may be sign of low blood sugar. It is not unusual for people in your age group to start showing insulin resistance.
Fasting sugar may still be good when this starts. Insulin resistance can lead to low blood sugars that come and go during the day.

We have a Peripheral Neuropathy forum here:
http://neurotalk.psychcentral.com/fo...aysprune=&f=20

This is my magnesium information thread:
http://neurotalk.psychcentral.com/showthread.php?t=1138

Also you might want to check the new info on Vit D... low D is very hard on people, and this video sheds new light on disease states and vit D deficiency:
http://www.youtube.com/watch?v=TQ-qekFoi-o

If you are really low in D, you may not be absorbing the calcium you take well enough.

SSRI drugs and SNRIs like Cymbalta may cause movement disorders over time, because the brain changes and affects dopamine levels. Some people get cramping, twitching etc from them. (usually after 6mos of use or so). A better drug choice would be amitriptyline which has recently shown to enhance healing at the peripheral level.

Shingles may stay subacute and active in nerves when there are no lesions visible. The only way to check this is to take the antiviral drug for a longer period of time. You can have blood tests to reveal the HVZ titres and see if they are still elevated. The amino acid L-lysine 1000 mg a day may help sequester it too.

See you over at PN here!