Headaches are often assumed to come from inside the head. But in many patients, the trigger begins lower down, in the neck.
The upper cervical spine, muscles, joints, nerves, and ligaments all share close neurologic connections with the head and face. When the neck is irritated, unstable, or overloaded, the brain may interpret those signals as headache, facial pain, migraine, or pressure.
This is why neck pain and headaches often travel together.
The Shared Nerve Pathway
One reason the neck can trigger headaches is a shared pathway called the trigeminocervical complex, which includes the trigeminal nucleus caudalis.
This region processes sensory information from the face, head, occipital region, and upper neck. When the cervical spine sends repeated irritation into this shared system, the brain may experience that signal as head pain.
A painful joint, tight muscle, irritated disc, or inflamed nerve in the neck may therefore feel like a headache.
Craniocervical Instability and Head Pressure
In some patients, especially those with hypermobility or Ehlers-Danlos syndrome, the ligaments at the base of the skull may not provide enough stability. This can contribute to craniocervical instability, where the head and upper neck do not remain well supported under gravity and movement.
When that region becomes irritated, patients may experience pressure headaches, brain fog, visual symptoms, whooshing tinnitus, dizziness, or symptoms of autonomic overactivity.
The nervous system may also become more reactive, making headaches easier to trigger and harder to calm.
Muscle Guarding and Occipital Neuralgia
When the neck is unstable or painful, the muscles at the base of the skull often tighten to protect the area. Over time, this guarding can irritate the occipital nerves, which travel from the upper neck over the back of the head.
This can cause occipital neuralgia: sharp, shooting, electric, or burning pain that starts near the base of the skull and travels upward.
Facet Joints, Discs, and Migraine Triggers
Cervical facet joints and irritated discs can also refer pain into the head. The C2-C3 facet joint is a common contributor because of its relationship with the third occipital nerve.
Neck dysfunction can also lower the migraine threshold. In some patients, migraine presents mainly as neck pain, stiffness, nausea, light sensitivity, or neurologic symptoms, even when head pain is not the dominant complaint.
Our Approach at MPM
At Manhattan Pain Medicine, we evaluate headaches and neck pain together, helping patients identify whether symptoms are coming from cervical joints, discs, muscle guarding, occipital nerves, craniocervical instability, migraine, or a layered head-neck pain pattern.
