Chiropractic manipulation and soft tissue manipulation administered 2-6 times per month for approximately 1 yr had minimal long-term effect on the patient's head pain. When additional interventions (nasal specific technique and light force cranial adjusting) were added to the treatment regimen, significant relief of symptoms was achieved after the nasal specific technique was performed. The duration of the relief increased with successive therapeutic sessions, with minimally persistent symptoms after 2 months of therapy.
Folweiler DS, Lynch OT. J Manipulative Physiol Ther. 1995 (Jan);18 (1): 38-41