Why the neck causes headaches

The upper cervical spine — specifically the joints, muscles and connective tissues at C1, C2 and C3 — shares neurological territory with the trigeminal nerve through a structure in the brainstem called the trigeminocervical nucleus. When afferent signals from irritated or restricted upper cervical structures converge here, the brain can interpret that input as pain in the head rather than the neck.

The result is a headache that feels genuinely located in the skull — often behind one eye, across the forehead or at the base of the skull — but is driven by a mechanical problem in the neck. This is cervicogenic headache.

Headache types commonly seen in chiropractic practice

Cervicogenic headache

Characterised by unilateral (one-sided) head pain that is reproducible by applying pressure to the upper cervical joints or by neck movement. It typically begins in the neck or base of skull and radiates forward. It is often associated with a restricted cervical range of motion — which Motion IQ testing can measure and track objectively.

Cervicogenic headache is frequently misclassified as tension-type headache or migraine, and patients are given prophylactic medication that does little to address the underlying cervical dysfunction.

Tension-type headache

The most common headache diagnosis — a bilateral, pressing or tightening sensation that is not worsened by routine activity. While the pathophysiology is multifactorial, there is a significant musculoskeletal component in many cases: sustained upper cervical extension (screen use), overactive upper trapezius and suboccipital muscles, and restricted cervical mobility all contribute.

Migraine with cervical involvement

Migraine is a neurological condition requiring appropriate medical management. However, a meaningful subset of migraine sufferers also have significant cervical dysfunction that acts as a trigger. Treating the cervical component does not cure migraine but can reduce frequency and severity in these patients.

How we assess headaches

A thorough headache assessment involves considerably more than a brief history. At our Mooloolaba clinic, we:

  • Take a detailed headache history — frequency, duration, location, unilateral vs bilateral, associated symptoms, aggravating and relieving factors, medication use
  • Screen for red flags that require urgent medical referral (sudden onset “thunderclap” headache, progressive worsening, headache with neurological symptoms, fever, neck stiffness)
  • Perform upper cervical orthopaedic testing — including the flexion-rotation test, which is highly sensitive and specific for C1/C2 dysfunction in cervicogenic headache
  • Use Motion IQ to objectively measure cervical range of motion and identify restricted segments
  • Assess posture and screen use habits that may be maintaining cervical dysfunction

Chiropractic treatment for headaches

For cervicogenic and tension-type headaches with a cervical component, evidence strongly supports spinal manipulation as an effective intervention. A 2017 Cochrane systematic review found that spinal manipulation was more effective than prophylactic medication for cervicogenic headache at both short and long-term follow-up.

Treatment at our clinic typically combines:

  • Upper cervical manipulation — targeted adjustments at C1/C2 and C2/C3 to restore restricted segmental mobility
  • Soft tissue therapy — for the suboccipital, SCM and upper trapezius muscles that are typically overloaded in cervicogenic and tension headache
  • Dry needling — effective for releasing deep suboccipital trigger points that refer pain into the head
  • Postural correction — addressing the sustained forward head position that loads the upper cervical structures
  • Deep neck flexor exercise — to provide long-term cervical stability and reduce recurrence

When to see a GP or specialist

Headaches accompanied by visual disturbance, speech changes, limb weakness or confusion, a sudden severe “worst headache of your life,” or headache with fever and neck stiffness require urgent medical assessment. We screen for these at every consultation and refer when the clinical picture warrants it.