Cervicogenic Headaches: When The Headache Isn't In Your Head

Most people who get frequent headaches eventually start treating the head painkillers, dark rooms, cold compresses, caffeine. And for a lot of headache types, that’s a reasonable approach. But there’s a subset of headache sufferers who do all of that, consistently, and never quite get on top of it. The headaches keep coming back, the pain relief is temporary at best, and nobody seems to have a satisfying explanation for why.

For some of those people, the problem was never in the head to begin with.

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The Neck as the Real Culprit

Cervicogenic headache is classified as a secondary headache meaning it’s a symptom of something else rather than a condition in its own right. That something else is a structural problem in the cervical spine, specifically the upper neck vertebrae most commonly the C1, C2, and C3 levels.

The mechanism is referred pain. The upper cervical spine and the head share overlapping nerve pathways, particularly through the trigeminal nucleus, a structure in the brainstem where signals from the face, scalp, and upper neck all converge. When there’s irritation or dysfunction at those upper cervical joints, the brain interprets that signal as coming from the head. The pain feels like a headache. It presents like a headache. But the source is in the neck, not the skull.

What causes that cervical dysfunction in the first place varies. Whiplash from a car accident is one of the more common triggers. Cervical spondylosis, the degenerative joint changes that come with age and wear, is another, which partly explains why cervicogenic headaches tend to show up more frequently after the age of 30. Disc herniation, facet joint arthritis, and pinched cervical nerve roots are all documented sources. Sometimes it follows a sports injury. Sometimes it develops gradually without any clear incident.

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What It Actually Feels Like

This is where cervicogenic headache earns its reputation for being difficult to diagnose, because on the surface, it can look almost identical to a migraine or a tension-type headache.

The pain is typically one-sided, which is a useful clue. It usually starts at the base of the skull. the suboccipital region and spreads forward, often tracking toward the eye or temple on the same side. Some patients describe it as a pressure behind the eye that seems to have no obvious cause. The one-sided, eye-involving quality is what frequently triggers a migraine workup, and it’s not uncommon for people to carry a migraine diagnosis for years before anyone looks at the neck.

The distinguishing features, when you know what to look for, are mechanical. The headache worsens with specific neck movements or sustained postures, looking down at a phone for a long period, turning the head a certain way, or holding the neck in one position during sleep. Limited cervical range of motion is a consistent finding on examination. Pressing on specific points in the upper neck the suboccipital muscles, the upper facet joints, often reproduces or intensifies the headache, which is a meaningful clinical sign.

One detail that catches people off guard: the neck itself doesn’t always hurt. Patients frequently present with a headache and no significant neck pain, which removes the most obvious pointer toward a cervical source. That disconnect contributes to how long the diagnosis takes to arrive.

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Getting the Diagnosis Right

There’s no single test that confirms cervicogenic headache, diagnosis involves piecing together the clinical picture from multiple sources.

The International Classification of Headache Disorders criteria (ICHD-3) provide a diagnostic framework, requiring evidence of a cervical lesion or disorder known to cause headache, alongside clinical signs implicating the neck as the source. In practice, this means a detailed history, a hands-on physical examination assessing cervical mobility and tenderness, and imaging.

X-rays, CT scans, and MRI are all used primarily to identify structural contributors like disc herniation, osteophytes, or facet joint degeneration, and to rule out more serious pathology like fractures or tumours. But here’s the important caveat: a normal scan doesn’t rule out cervicogenic headache. Imaging captures structure, not function. A cervical joint can be generating pain through abnormal movement or irritation without showing anything remarkable on an MRI. That’s why the physical examination and clinical assessment carry so much weight alongside the imaging findings.

Diagnostic nerve blocks — injecting local anaesthetic around the suspected cervical source are sometimes used both diagnostically and therapeutically. If temporarily blocking a specific nerve or joint reliably reduces the headache, that’s strong evidence pointing to that structure as the source.

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Treatment That Actually Addresses the Cause

The guiding principle of managing cervicogenic headache is treating the neck, not just the headache. Symptomatic pain relief has a role, but it doesn’t resolve the underlying cervical dysfunction, which means the headaches keep coming back.

Physiotherapy is almost always the starting point, and for good reason. Manual therapy targeting the upper cervical joints, mobilisation and manipulation performed by a skilled physiotherapist, has solid evidence behind it for this specific headache type. Combined with a progressive exercise programme that addresses deep cervical flexor strength and postural control, many patients achieve significant and sustained reduction in headache frequency. This isn’t passive treatment, the rehabilitation component matters as much as the hands-on work.

For cases that don’t respond adequately to physiotherapy alone, interventional options are available. Cervical nerve blocks using local anaesthetic and corticosteroid can provide meaningful pain relief and break the cycle of chronic irritation. Radiofrequency ablation, a procedure that uses heat to disrupt the pain signals from specific cervical nerve branches, offers longer-lasting relief in appropriate candidates, sometimes for a year or more.

Medication has a supporting role. Certain drugs used in migraine prevention, including SNRIs like duloxetine and anticonvulsants like gabapentin, show some benefit in cervicogenic headache, particularly for managing the central sensitisation that develops in longstanding cases. Standard over-the-counter painkillers tend to be less effective and, used frequently, carry the risk of medication overuse headache layering on top of the original problem.

Surgery is genuinely the last resort, considered only after conservative and interventional approaches have been thoroughly exhausted, and where a clear structural target has been identified.

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Why Getting This Right Matters

Cervicogenic headache is one of those conditions where the gap between the right diagnosis and the wrong one determines years of treatment outcomes. Someone being managed for migraine who actually has a cervical source isn’t getting better, they’re just getting older with the same headaches.

If your headaches are one sided, consistently start at the back of the head, worsen when you move your neck a certain way, or have never fully responded to migraine treatment, it’s worth specifically asking whether the cervical spine has been properly assessed. Not just imaged, assessed. Range of motion, joint tenderness, the relationship between neck position and headache onset.

The answer to a lot of frustrating, treatment-resistant headaches is about 20 centimetres lower than everyone’s been looking.