Two recent articles in the journal, Spine, reported that patients suffering from neck pain and/or cervical headaches who received a combination of manual physical therapy and exercise demonstrated a significant decrease in pain, resolution of headaches, and an increase in function.
Walker MJ, Boyles RE, Strunce JB, Garber MB, Whitman JM, Deyle G, Wainner RD. The effectiveness of manual physical therapy and exercise for mechanical neck pain. Spine. 2008 Oct 15;33(22):2371-8
Jull G, Trott P, Potter H, Zito G, Niere K, Shirley D, Emberson J, Marschner I, Richardson C. A randomized controlled train of exercise and manipulative therapy for cervicogenis headache. Spine. 2002 Sept 1;27(17):1835-43.