I get all sorts of uncomfortable sensations around the spot in my upper back with all the lesions. Yesterday a muscle was spasming in my back - today it's okay, but I'm getting muscle twitches in that area. I've gotten muscle spasms around one side. I get esophageal spasms. I've also had spasms around the lower abdomen - not sure what that's about, but I do have a lesion at T10 as well.
I think that damage to the spinal cord will result in symptoms at the level of the lesion. You'll get tingling, burning, buzzing - all the usual paresthesia. You'll also get spasms and spasticity, because of poor nerve condution. You won't always have the 'all the way round' MS hug - who knows why! Maybe the nerves are working on one side, but not the other.
What I have feels similar at times, but most of the times now it feels like there is a wire wrapped tightly around and around my chest at the level just above my bra strap. Wearing a bra makes it worse, but even when I am not wearing a bra it feels like I have a very tight, twisted and uncomfortable bra on. It digs into my rib cage and is extremely uncomfortable. When the discomfort is worst, it is hard to get a good breath and this affects my speech.
I never knew what this was, and always thought it had something to do with a case of shingles I had 7 or 8 years ago in the bra strap area. But, it has definately gotten worse over the past 8 months or so, just like all my other MS-like symptoms (I am not diagnosed yet).