Remember, all these tests are probably going to show 'normal limits'.
All of them!
Dx'ng PN is a whole procedure of ruling things out. There's no one test that is the litmus, with an exclamatory.....
...... A-HAH!! That's PN !
Its good that he's including a test for MS- that's par for the course. Gotta rule out as much as possible, and by method of deduction and investigative medicine, try to figure out the basic cause.
If and when that does happen, a more direct course of treatment will be possible- but the basic treatments for all of us are just about the same.
anti-seizure or anti-depressant meds and pain meds as a cocktail. Specific meds or treatments are added as more info is gathered, and dosages are modified- but we all start out with just about the same treatments. So whatever you're doing now, the docs are trying to help.