Neck adjustments provide relief for chronic headaches. The Journal of Chiropractic published a pilot study by Wittingham in 1994 in which 26 patients with headaches participated. Each patient received neck adjustments over a 2 week period. All but 2 of the patients experienced significant improvement in headache frequency, duration and severity. The overall duration of headaches decreased by 77%, the overall score for severity showed a 60% improvement in perceived pain, and the frequency of the headache also improved by 62%.