Posadzki P, Ernst E.
Published in Complement Thera Med. 2012 Aug;20(4):232-9. doi: 10.1016/j.ctim.2011.12.001. Epub 2011 Dec 29.
The evidence that spinal manipulation alleviates tension type headaches is encouraging, but inconclusive. Further research is needed.
Chaibi A, Tuchin PJ, Russell MB.
Published in J Headache Pain. 2011;12(2):127-133.
The random controlled trials suggest that massage therapy, physiotherapy, relaxation and spinal manipulative therapy might be equally effective as propranolol and topiramate in the prophylactic management of migraine. However, these had many methodological shortcomings and therefore, future, well-conducted trials are needed.
Bronfort G, Assendelft WJ, Evans R, Haas M, Bouter L.
Published in J Manipulative Physiol Ther. 2001 Sep;24(7):457-66.
Manipulation appears to have a better effect than massage for cervicogenic headache. It also appears that spinal manipulation has an effect comparable to commonly used first-line prophylactic prescription medications for tension-type headache and migraine headache.