Suggest Treatment For Muscle Tightness

I've been treated for about 4 weeks for my muscle tightness and knots on the left shoulder blade, neck and arm, pins and needles down left arm also by a physical therapist, massage therapist and chiropractor. I have had electrical muscle stimulation, stretching, ultrasound, massage therapy, traction and manipulation of cervical area. Symptoms have decreased in severity but they are still happening. How long can I expect this to continue without me deciding to go to an osteopath or neurosurgeon?