(Below exert take from our sister site The Headache and Migraine Clinic website)
What is a Migraine?
Migraine is a neurological condition with neurovascular sequalae. It is one of the most severe and debilitating forms of headache and affects approximately 6% of men and 18% of women globally1,2.
The WHO and the Global Burden of Disease study ranked Migraine in the top three most prevalent disorders in the world, and among the top seventh highest causes of disability worldwide1. Migraine can be devastating and disruptive with up to 91% of sufferers reporting an inability to perform their usual daily tasks and 53% experiencing severe functional impairment3, with the most common being self-imposed bed rest.
The International Headache Society suggests the most common presentation is unilateral (one side of the head) throbbing pain from moderate to extremely severe in intensity with attacks commonly lasting from 4 to 72 hours2.
Migraines are also often accompanied by other symptoms like nausea (present in almost 90% of sufferers during an episode), and vomiting (in approximately 30%) and very commonly some sensitivity to light, sound or smell (approximately 75%).
The typical migraine episode has 4 phases:
- Premonitory “warning signs” hase
- Aura phase
- Headache pain phase
- Post dromal “hangover” phase.
Unlike tension type headaches that generally improve with moderate physical activity, a migraine attack is aggravated by physical activity. Most often migraines are set off by a trigger. Most sufferers know their triggers well but these can morph and worsen as sensitivity of the nervous system increases over time. The most common two triggers cited are stress and neck tension/dysfunction. A massive 94% of migraineurs have neck signs and symptoms6.
What is the Cause of Migraine?
On the surface, the cause may be attributed to stress, tension, fatigue, certain foods, chemical or hormonal imbalances, but in reality these are more accurately triggers and not “the” cause.
So what is the real cause?
Thankfully, research is now revealing what every migraine sufferer knew all along, namely it’s not “all in your head!”. In fact, what is emerging is the fact of a common pathway or “headache headquarters” in the brainstem where multiple neurons converge. This specific region is called the Trigeminocervical complex (TCC) and is a “holy grail” of sorts for both researchers and sufferers alike. Furthermore, recent studies have revealed that one of the most powerful causes of brainstem sensitivity is the upper neck or Cervical spine4,6,7.
Even between an episode or attack, research shows that migraineurs exhibit a sensitized brainstem. This explains why normal stimuli is registered by a migraineurs nervous system as a stressor or trigger for an attack…it is normal everyday stressors activating an already sensitized brainstem. Therefore, the real cause of the neurovascular event we call a migraine, is this underlying neurological condition.
During an attack an already sensitized brainstem (by the neck or other causes) is activated by a trigger, which then sets off an explosive positive feedback loop from the brain cortex and back to the brainstem. The already “cranky” hyper sensitized brainstem fires and the cortical brain cells respond with cortical spreading depression causing inflammation of the blood vessels, dura and local tissues in the face, head and neck.
The trigeminal nerve (a nerve that supply’s sensory and some motor control to the face, head, jaw, upper teeth) then picks up this amplified signal and becomes inflamed and sensitized itself lighting up pain in the face, head and scalp which then sends powerful signals back to the brain stem and the pain neuromatrix…and the vicious cycle continues amplifying and causing intense pain and multiple effects.
The good news is this brainstem sensitivity can be treated with an integrated and combined therapy approach, with a critical step being expert screening of the upper neck as a primary contributor of sensitivity in the brainstem3,4.
Our unique combined therapy approach is logical and evidence-based and aimed at decreasing the sensitivity in the brainstem at the “headache headquarters” with a number of safe treatment options individualized to your headache type.
Click the links for more information on how we perform Our Assessment or Our Treatment or to learn more about our revolutionary 4 phase S.T.E.P. into FREEDOM TM program to help you live life headache free! (Please note if you click the links you will be directed to our sister site for The Headache and Migraine clinic).