How do forms of neuropathy get diagnosed?

I’m having more trouble with my right side. Usually it is just my neck, shoulder and middle of my back.. sometimes my right hip, but now it has been intermittent in my jaw, ear and today I developed sudden and spreading incredibly painful burning in the tips of my ring and pinkie finger on my right hand.

I’m making an appointment with my doctor, of course, but I’m wondering if anyone has any experience in the diagnostic procedures for this type of thing.