Results of EMG when symptom free

[hatepickingnicknames]

My nero has ordered a EMG but during these weeks between when he ordered it and the actual appointment my symptoms have just about all gone away.   If I have MS will it still show up or shoud I wait untill I have another "spell"?

Thanks!

[hatepickingnicknames]

Thanks everyone...I go on Wednesday.

[COBOB]

The main reason for an EMG/NCS is to determine if there is peripheral or spinal nerve pathology.  CNS disease  doesn't effect the SNAP (sensory nerve action potentials) or the CMAP (compound motor action potentials.)  In overly simple terms, EMG checks the peripheral wiring and EEG, VEP, SSEP, and BAER check the CNS wiring.  

MS should not cause changes in the EMG, but many people will have medial nerve SNAP latency at the wrist which is the result of carpal tunnel syndrome.  There is other peripheral nerve damage that can happen and may be detected by EMG.   We can't blame everything on MS.

One of the keys here is that if you have left arm tremors and left arm pain, but a normal left arm EMG, the cause is not in the nerves of the arm. If the arm is sensing and compound motor actions are normal, than the signals causing the issues are coming from somewhere else.

Bob

[ladyili]

I had one done while still undiagnosed,mainly non contributory to MS I guess, mostly baseline infor gathering, yet it showed something on my left side and they wanted to take another one sleep deprived, which I have not taken yet. They asked me if I had seizures , etc., which I never did, have.

[Lulu54]

that's a tought one to answer.  The nerve pathways never heal completely , just patched over much like a pothole.  The pathway doesn't conduct as well once it is damaged.  

Damage to the nerves would probably still show up, even if you are symptom free.  but that is just my guess - someone else might have a better perspective.