Chronic migraine is defined by the International Headache Society as headache occurring on 15 or more days per month for more than three months, with at least eight of those days meeting the criteria for migraine. It is distinct from episodic migraine not only in frequency but in the physiological state that sustains it. By the time migraine has become chronic, the central nervous system has undergone changes that make attacks easier to trigger, more difficult to abort, and less responsive to the acute treatments that worked when attacks were less frequent.
The path from episodic to chronic migraine is rarely random. In most people who develop chronic migraine, there are identifiable factors that have progressively lowered the migraine threshold over time. Medication overuse is one. Sleep disruption, anxiety, and life stressors are others. And in a significant proportion of people with chronic migraine, upper cervical spine dysfunction is a persistent, unidentified peripheral driver that has been sustaining the brainstem sensitisation that chronic migraine depends on.
The Watson Headache Approach, available at MyoFitness across Melbourne at Yarraville, North Melbourne, and Surrey Hills, provides a specific clinical assessment to determine whether C1, C2, or C3 are contributing to a chronic migraine pattern. Where they are, addressing the cervical source reduces the peripheral input sustaining that sensitisation, and the migraine pattern changes in ways that medication management and lifestyle modification alone have not been able to achieve.
Chronic migraine is not simply frequent episodic migraine. It is a different physiological state, defined by sustained central sensitisation that lowers the threshold for attack across the entire month. Understanding what is sustaining that sensitisation is the clinical question that the Watson Headache Approach at MyoFitness is designed to help answer.
The clinical significance of the chronic migraine definition is that it captures the overlap between migraine and tension-type headache that is characteristic of this condition. On days that do not meet full migraine criteria, the headache in chronic migraine often resembles tension-type headache: bilateral, pressing, less severe. This overlap is not incidental. It reflects the shared brainstem mechanism through which upper cervical dysfunction can sustain both migraine and tension-type headache patterns simultaneously through ongoing sensitisation of the trigeminocervical complex.
International Headache Society definition (ICHD-3, 1.3)
Chronic Migraine
Headache occurring on 15 or more days per month for more than 3 months, which has the features of migraine headache on at least 8 days per month. The remaining headache days may meet the criteria for tension-type headache, or may be headache not otherwise specified. Chronic migraine is associated with significant disability, a high rate of medication overuse, and substantially reduced quality of life compared with episodic migraine. The global prevalence is approximately 1 to 2 percent of the population, with a higher prevalence in women than men.
Our practitioner attended the Watson Headache Institute Level 1 Foundation Headache Course titled “Cervicogenic Headache and The Role of C1-C3 Cervical Afferents in Primary Headache” presented by Dr Dean H Watson PhD, Australian Musculoskeletal Physiotherapist. For further information, go to: www.WatsonHeadacheApproach.com
The course was based on the Watson Headache Approach, a protocol for the skilled assessment and management of the upper cervical (neck) spine in Cervicogenic and Primary Headache, and related conditions in which the underlying dysfunction is sensitisation of the lower brainstem. The Watson Headache Approach is recognised as a scientifically researched method of examination as well as a comprehensive clinical management system. For further information, go to: www.WatsonHeadacheApproach.com
The Watson Headache Approach at MyoFitness addresses the first item on this list specifically. It does not claim to resolve all contributors to chronic migraine. But where upper cervical dysfunction is identified as a contributing factor through the Watson Headache assessment, treating it reduces the peripheral afferent load that is sustaining brainstem sensitisation. This raises the effective threshold, which means that the same remaining trigger factors produce fewer and less severe attacks. For many people with chronic migraine, this shift in threshold is clinically significant.
Understanding how episodic migraine progresses to chronic migraine matters for understanding why the Watson Headache Approach can interrupt the pattern for people who have been in the chronic state for years.
Episodic migraine is defined as fewer than 15 headache days per month. Attack frequency can range from one or two per year to several per month. As frequency increases, the inter-ictal nervous system is progressively altered by repeated sensitisation events. Each attack lowers the threshold slightly for subsequent attacks, and the interval between them shrinks.
People in this range are at the highest risk of chronification. Contributing factors including medication overuse, sleep disruption, anxiety, and unidentified cervical dysfunction interact to accelerate the progression. Watson Headache assessment at MyoFitness is particularly appropriate at this stage because identifying and addressing the cervical component can slow or reverse the progression toward chronic migraine before it becomes established.
Once the chronic threshold is crossed, the nervous system is operating in a state of sustained sensitisation. The distinction between migraine days and non-migraine headache days begins to blur, medication overuse is more likely, and the pattern becomes more difficult to treat. Identifying and addressing the upper cervical component, where present, reduces the peripheral afferent load that is sustaining the sensitised state.
Some people have been living with chronic migraine for years or decades, with partial but insufficient response to multiple medication strategies. Where upper cervical dysfunction has been contributing throughout this period without being identified, Watson Headache assessment at MyoFitness provides a clinical answer to a question that has not previously been asked: whether the cervical spine is sustaining the sensitisation that is maintaining the chronic state.
Frequent use of acute headache medications can contribute to medication overuse headache, a recognised condition that often develops alongside high-frequency episodic or chronic migraine. As pain relief medications are taken more regularly, the nervous system may become increasingly sensitive, resulting in more frequent headaches and a reduced response to treatment. Where upper cervical dysfunction is also present, the ongoing cervical nociceptive input may further contribute to the cycle of sensitisation. Watson Headache assessment at MyoFitness helps determine whether cervical dysfunction is adding to the overall headache burden while medication use is being appropriately managed.
Some people experience migraine attacks that are consistently preceded or accompanied by neck pain, neck stiffness, or restricted cervical movement. Over time, the cervical symptoms become increasingly prominent and may persist even between migraine episodes, indicating a potential ongoing source of nociceptive input from the upper cervical spine. In these cases, Watson Headache assessment at MyoFitness evaluates whether upper cervical dysfunction is contributing to repeated trigeminocervical sensitisation and whether reducing this cervical input may help decrease migraine frequency and severity as part of a comprehensive migraine management approach.
The MyoFitness Yarraville clinic at 231 Hyde Street is accessible from across the inner west. All of the following suburbs are within easy reach of the clinic.
MyoFitness also operates clinics in North Melbourne at 154 Peel Street and Surrey Hills at 296A Canterbury Road. All three clinics offer Watson Headache® Approach assessment and treatment for migraine.
Where the Watson Headache assessment confirms that C1, C2, or C3 are contributing to a chronic migraine pattern, treatment applies specific sustained manual techniques to those segments in a sequence determined by the assessment findings. The technique does not involve high-velocity thrust or manipulation. It uses calibrated, sustained contact with the upper cervical joints to reduce the abnormal afferent activity that is feeding into the trigeminal nucleus caudalis and sustaining the sensitised state that maintains chronic migraine.
The program at MyoFitness is structured as 5 to 6 sessions over approximately three weeks. For people with long-standing chronic migraine, the response may be slower than in episodic presentations, because the degree of central sensitisation that has accumulated over years of high-frequency migraine takes longer to reduce through peripheral afferent treatment alone. Your practitioner will discuss realistic clinical expectations for your specific presentation, duration of the chronic state, and degree of cervical involvement at your initial assessment.
At each session, the upper cervical segments are reassessed before treatment is applied. The sequence and technique adjust in response to what is found, not repeated identically. Progress is tracked through changes in both the cervical assessment findings and the migraine diary, which your practitioner will ask you to maintain throughout the program.
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Every session begins with a clinical assessment. Treatment is directed at the actual cause of your pain, not just the location where you feel it.
Not every chronic migraine has a significant upper cervical component. The presentations most likely to have an identifiable and treatable cervical contribution share some recognisable features.
