Is the MS hug/grip/corset feeling something that gets worse over time? Does anybody have this around their middle back? Last year, I started feeling what was a very slight tightness around my middle back. It was only occasional and typically only noticeable after dinner. It only lasted for about an hour. Yesterday, I felt a tighter grip around the same area which lasted from the middle of the afternoon and then got very strong after dinner, lasting until I fell asleep. I felt like I had been bitten (or at least gripped) by a giant toothless shark. Has anyone’s doctor explained what this sensation means either in terms of nerve damage or MS progression?