What Causes Severe Pain In The Neck?

i have been suffering from severe pain in my neck that travles to my lower back. When i got my MRI done it shows in the paraspinal soft tissue prominent adenoidal tissue present and a 5mm thornwaldt cyst is seen in the posterior nasopharynx. I also have mild stenosis at L4-5 due to mild disc bulge and facet osteoarthritis. I have suffered from severe head aches as well as back pain and syatic on right side that shoots to right leg and now that I have stopped pain meds, all the pain is back as well as head, nose, ear and throat with heavy mucus ...it seems like when im on pain meds it keeps the ear nose throat and mucus from inflammation and my neck issue doesnt hurt as bad.....does the opiates have something to do with keeping me from getting an inflammation in my head....as well as keeping me from getting head colds and severe neck pain ...right now i am sick not withdral sick but , im getting severe head cold with heavy mucus which I NEVER get on my pain med untill i stop taking them ..I dont know anybody that has this issue ...its like the opiate keeps me from getting this head cold and keeps my pain levels down..I have been refered to neoroligist as well as orthopedic, just havent gone YYYY@YYYY