Everyone's headache is a little different from the next person. Sometimes the pain starts at the base of the skull and works its way upward. Sometimes it starts in the temples. Whatever the case, there is a good chance that a major cause of your headache is due to the top vertebra in your spine being in the wrong position.
We have found through experience that most people with headaches and especially headaches with neck pain absolutely DO NOT want their necks to be twisted or cracked.
The technique of adjusting the top of the spine developed by NUCCA (National Upper Cervical Chiropractic Association) intends to gently restore the correct alignment of the C1 vertebra between the skull and the rest of the spine.