Headaches have many presentations and many causes.
Migraines with or without aura often can be very limiting. They are to do with faults in blood circulation, dilation of specific blood vessels and nervous system dysfunctions.
Tension headaches are more to due with things like emotional distress, anxiety and lack of rest, which increase tension in the muscles at the base of the cranium and contribute to the rise of the symptoms. However, major trauma like whiplash may also lead to tension type headaches. Another major contributing factor may be dental malocclusion and its indirect effects on upper cervical mechanics.
Chiropractic can be very effective in relieving these types of headaches as shown in clinical trials. Resolving cervical blocks, easing muscular tension and helping the system to find neurological steadiness is how chiropractic can resolve the neuromeccanical cause of headaches.