Not long ago I have a neruo exam and had the pin/poke test done and I would have to said that 90% of it I could not tell which was which in this test and fluked many of the other tests as well and 2 days later I got a call to come back as some thing was found on my MRI of my head and want one done on my upper lumbar
But just what dose the pin/poke test tell the neruo as I can't find anything on this test
I think what you are talking about
is having the doctor test for sensory changes that you might be experiencing. He is specifically looking for changes in skin sensitivity. Sometimes patients will report (the medical term is "complain") that they feel like their skin is prickly, or have a buzzing sensation, or feels numb. Sometimes just one area feels that way, other times it's a more generalized feeling of numbness or tingling. The doctor will literally stick a pin in you in various places, and/or poke you, and ask if you can "feel that?" or "does that feel different from this??" sort of thing.
I'm assuming the other tests you talked about included things like examining your eyes to see if there is any damage done to your optic nerve (optic neuritis, or a swelling of the optic nerve is common in MS), and you were tested for balance, coordination (the finger-to-nose test is often used for that), whether you can place the heel of one foot directly in the path of the other food and step forward, a sort of "drunk test", probably some vibration tests where he places a vibrating tuning fork on various parts of your body and asks if you can feel it, or if it feels differently from one area to another. He probably also tested your reflexes, and your strength, and the strength of one limb as opposed to another.
All these tests may seem a bit trivial, but they all can tell the doctor whether there are problems with your nervous system, whether the problems are with your peripheral nervous system or your central nervous system (MS is a disorder of the central nervous system), and cause him to ask for further testing - -the MRI, sometimes a lumbar puncture (or spinal tap), evoked potentials (which measure the brain waves from brain to eyes), and some others.
You probably couldn't find anything specific about the "pin poke test" because I suspect that's the doctors description of it, rather than the more generalized "testing for sensory changes", which are described in many books about MS.
Do let us know how the MRI goes! Good luck!