midback. low back. upper back, with neck and shoulder tension. the left side. the right side. bilateral. close to the spine, or further out. worse with movement. worse with rest. worse with movement after rest. better with heat. better with ice. better with pressure. due to computer work. due to manual labor. due to a car accident. due to a biking accident. due to stress. radiating up the neck, to the head causing headaches. radiating down the arm(s) causing arm pain/numbness.