I believe the spirrochetes travel from location to location. As most of my symptoms come back from time to time, I believe they can remain dormant in locations and then become active again. But that is must my theory.
My back is also tight. It often feels like something is pinching the muscles and it changes locations. I had such bad back pain before I knew I had lyme that I had to take pain killers for a month. Then it disappeared for about 2 years - very odd.
Now I also have tendinitis in my right arm. This arm was affected before treatment, again for about a month, so that I could not use it. The pain came back and got much worse while using Levaquin. It is my theory that the levaquin set this off in an already weakened area. I have been off levaquin and all abx for over 2 months but the pain is still there. It aches so much at night it is hard to sleep. It if funny that I cannot lay down flat but have to sit with a lot of pillows behind me or it is much worse. I believe this is toxin build up from the abx which will take a long time to clear out of my system. I read it is called flox, or something like that. It is improving very slowly.