Good evening. In 2009 I had cervical spine fusion c-5/c-6 due to degenerative disc disease. I also had lumbar fusion as well L-5/s-1. I have been getting headaches for 2 years on and off but recnlyt much worse. I get bad vertigo first, vomiting, and then The excrutiating headache comes. I'm in bed some days for 24 hours.
I have been though physical therapy, taken NSAIDs, prednisone, cortisone injections, trigger point injections and still I'm suffering. All my neck muscles and shoulder muscles are rock solid with knots. What could be causing these headaches?