Get normal massages 2x a week for a month, then 1x a week the next month. Treat trigger points in the traps and neck. Mine cause my symptoms. Also get a book on trigger point headache guide. It has a map for where pain in head is. I use it all the time to work out trigger points that affect those areas of the head. It has helped me tremendously. Not gone, but manageable. Physical Therapy is also really good for ON. Build up your lower and mid traps because most pain from those areas are from a bad ratio of upper trap to mid/lower traps. The upper usually are much stronger, and the lack of balance can cause pain issues.