Hi CMB -
As you know, MS is a progressive disease. The relapse part of RRMS often means new symptoms, like the strange sensation in your back. Any new symptom should be brought to your neuro's attention.
Kyle
Hi and welcome to our little MS community,
To be honest i'm totally confused by your heading "Electrical current mid back non stop" and your descriptive explanation of a "grapefruit size shape like marching feet in a continuous circle on upper spine between shoulder blades"
Hopefully someone will be able to understand what you are experiencing and provide some better advice than mine, which is to contact your neurologist if this is a new issue, as it could be an indication that your having another relapse and or indicate a nerve pain medication should be added to your current treatment plan.
Cheers.......JJ