I have been tested, and re-tested over the years (since this started) by my regular doctor. Glucose, B12, Vitamin D, Electrolytes, Liver and Kidney function, thyroid, etc. My vitamin D was low and we corrected that. When the doctor suspected that I might have RLS, he had my ferritin (iron stores) level checked....it was low....I have been taking supplements and have it in good shape now.
The Neuro sent me for an MRI of my neck and back....normal. He also sent me for more bloodwork.....sed rate, ANA, bunch of stuff I do not even know the names of. All came back normal except ANA. He sent me for the sub-sets of that and they came back normal. I later found out that my mother and sister also test positive on the ANA. Must run in the family. Doctor said some people just test positive but do not have an auto-immune disease.

Meds I take................

Toprol XL - 12.5 mg / day.........mild high blood pressure
Tandum Plus - Iron supplement to raise ferritin levels
Simvastatin - take 3 x per week to lower cholesterol.
Centrum - vitamin
Vitamin D - vitamin
Neurontin - 700 mg per day

Note: I did not start taking the simvastatin until long after this started, so it is not the culprit. Also, I only agreed to take 3 x week because I heard it can cause PN.

Thanks
Janet