you have pain that feels like electric shock
. 1st possibility is lack of vit B12, thats the commonest condition now a days.. 2nd is___ if there any associated numbness
, radiating pain
, sense of burning etc then visit the doctor as you require cervical spine
xray.there may be some chances of spondylitis( nerve compression). if there are no such symptoms then also u need xray as it has progressed to the left arm also.
thank you very much.
have a good health.