Front Seat Head Restraint problems of the 2007 Honda Accord

On a six hour vacation trip, I began to experience acute middle back pain. I had begun a new job about a year prior to this trip, in which I made commutes of about 1 hr. And 15 minutes round-trip on 4-5 days a week. I had noticed over the course of my new commute that my car seat became increasingly uncomfortable. However, while on this long six hour trip, about 3 hours into the trip I began to feel severe back pain. I don't think we had taken a rest break by this point in the trip. It became uncomfortable for me to rest my back in the seat, as my middle vertebrae felt very sensitive to the touch. It then became more difficult to sit in a chair for more than a few minutes, and of course the driving posture became increasingly painful and uncomfortable. After some chiropractic treatment, the intensity of the pain has lessened, but the discomfort has never fully gone away. In recent months a physician has treated my back pain by with a prescription strength topical neuro/inflammation ointment. The physician has not yet given a specific diagnosis to my condition, but the pain and discomfort seems to be lessening very gradually. I believe the pain and discomfort is caused by the pronounced "cupping" shape of my car's seat and headrest, which keeps me from finding a comfortable posture while driving, especially on long-distance drives.