I get shock like pain all over my body for as long as I can remember ( I am a teen) they have been worse this year,and in addition my muscles spasm like crazy and my eyes often shift around involuntarily. Can anyone relate or have any ideas as to what this could be? I've had bloodwork done for B12 def. turning up negative. I am in pain all the one and I want I know what its like to live a life without pain!