Yes, I too have the tightness in my neck and jaw and tingling sensations. The tingling started in fingers and feet (nueropathy from chemo I am told). It now travels around the back of my neck as well. My chemo Oncologist told me the side effects from most meds to treat this is worse than living with the "tingling", as long as it's tolerable.
I agree with Rainey, the more I use those muscles in my jaw and neck, the more mobility I maintain throughout the day. I still do the exercises the speech therapist gave me during rehab back in January/February.
I have had an intense pain and aching in my left shoulder (right side dissection and treatment) My Oncologist told me he thinks it's a rotator cuff and nothing whatsoever to do with treatment. Funny though, I didn't have any of these symptoms until just recently, and I sure haven't been completing any vigorous exercise lately! Other than dry mouth & limited taste, if that's the only other issue I incur I'm great with things!!
Best wishes,
Steve