hi, since you mentioned muscle spasm in the neck and lower back region. I will initially ask you to use some hot fermentation so that the muscles can relax. then we need to wait and see for a week if along with hot water fermentation and rest the pain and stiffness subsides. also you mentioned the symptoms of painful movements , tingling sensation, weakness. I feel that it might be related to a nerve getting trapped based on your complains. Usually due to prolong weakness of the muscle there is a chance of the spinal column going weakness. you can undergo an MRI scan of cerical and lumbar to see the soft tissues in that area as it will help to make the treatment more precise. What you can do in the mean time is working out behind the neck and lower back muscles to strengthen them. Also the core strengthening exercises are of due importance. Incase if the symptoms are more than meeting a physical therapist and undergoing few sessions of ultrasound therapy and TENS will help reduce the muscle spasm and pain radiating symptoms. to look forward now, exercises helps 99% of cases if done under supervision and learnt well. post that one need to needs to keep continuing the exercises to keep the spinal muscles stronger. Weakness of spinal muscles will lead to damage to the spine soft tissues. So I Advice to be focused on this. I have seen many cases and i have only found 100% success in them and all are able to perform the best functional activities. I am hopeful that I will hear from you soon that post doing all the exercises for spinal muscles strengthening and core stability you will have a pain free life and the best functional outcome score. Regards