Cervical traction may help,but it may be a little severe as an approach, how about cervical exercises under direction from a physical therapist of sorts, or even physical therapy full stop.
Cervical nerve blocks can and do relieve symptoms, in some cases. This however doesn't treat the cause, but lower the inflammation in said area.
Inflammation is your bodies healing mechanism, so you might feel better but you want to address the cause.
I'd consider a positive reaction to a cervical nerve block as a very high indication of neck involvement. Address the neck issue, life style changes to aid inflammation.
The below link should be of interest, and if you search pubmed there are others, if you can't find them ask, I'll do my best.
Wishing you well.