Yes, loss of cervical lordosis is associated with headaches, particularly a type called cervicogenic headache. This connection stems from the increased mechanical load a straightened neck places on the spine’s joints, muscles, and nerves. The relationship isn’t always straightforward, though. Understanding how your neck’s curve affects head pain can help you recognize the pattern and pursue the right treatment.
How Your Neck’s Curve Relates to Head Pain
A healthy cervical spine has a gentle inward curve (lordosis) that distributes the weight of your head evenly across the vertebrae, discs, and surrounding muscles. In people without neck problems, this curve averages around 12 to 18 degrees depending on the measurement method used. When that curve flattens or reverses, the biomechanics of the entire cervical region change.
A straightened neck, sometimes called “military neck” or hypolordosis, shifts the head’s center of gravity forward. This forward head posture forces the muscles at the back of the neck and base of the skull to work harder to hold your head up. Over time, this creates chronic tension in muscles that attach directly to the base of the skull, which is one of the primary ways a flattened cervical curve triggers headaches. Research on 300 cervical X-rays found a statistically significant link between cervical pain and lordosis measuring less than 20 degrees.
Cervicogenic Headaches and Neck Alignment
The headache type most directly tied to neck problems is cervicogenic headache, classified by the International Headache Society as a secondary headache caused by disorders of the cervical spine or its components, including bone, soft tissue, or disc. These headaches are typically triggered by neck movement or external pressure on the neck, accompanied by one-sided neck pain, and traceable in timing to a cervical problem or injury.
A cross-sectional study measuring forward head posture found that people diagnosed with cervicogenic headache had significantly lower craniovertebral angles (a measurement of how far the head sits forward relative to the neck) compared to those without the condition. Decreased craniovertebral angle was identified as an independent predictor of cervicogenic headache. Forward head posture is closely linked to decreased lordosis, especially in the lower cervical segments from C2 to C7, because the spine straightens as the head drifts forward.
Interestingly, the picture is more complex than “less curve equals more headaches.” One study comparing radiographs of 30 people with cervicogenic headache to 30 matched controls actually found an association between greater overall cervical lordosis and increased likelihood of having the condition. The researchers concluded that while cervical posture is associated with cervicogenic headache, the data don’t definitively prove posture causes it. Trunk imbalance, trunk inclination, and vertebral rotation also significantly predicted cervicogenic headache in a separate study of 200 participants.
What These Headaches Feel Like
Cervicogenic headaches have a distinct profile. Pain usually starts at the back of the neck or base of the skull and radiates forward, often settling behind one eye or across the forehead on one side. Turning your head or holding it in one position for a long time can trigger or worsen the pain. You might also notice neck stiffness or reduced range of motion alongside the headache.
Migraines can look similar, which makes diagnosis tricky. Two physical findings help tell them apart: people with cervicogenic headache tend to have noticeably reduced rotation when a clinician turns their head while it’s flexed forward, and weaker neck flexor muscles compared to people with migraine. Still, because the symptoms overlap considerably, physical testing alone can’t distinguish between the two. Clinicians typically combine these findings with your description of symptoms and their timing to reach the right diagnosis.
When Straightening Becomes Reversal
Loss of lordosis exists on a spectrum. A mildly straightened neck may cause intermittent tension headaches that respond to stretching and posture correction. But when the curve reverses entirely, creating a forward-bowing shape called cervical kyphosis, the consequences can be more serious. Cleveland Clinic lists headaches as a recognized symptom of cervical kyphosis, alongside difficulty swallowing, muscle weakness in the shoulders and arms, tingling or numbness, and even instability when walking.
Severe cervical kyphosis can also affect the vertebral arteries that run through small openings in the cervical vertebrae. Degenerative changes like bone spurs can narrow these passages, and abnormal spinal alignment may compress or kink these arteries during head movement. While this is more commonly associated with rotation-related symptoms like vertigo and fainting, headache has been documented in cases where vertebral artery flow is compromised.
The Role of Muscles and Posture
Even without dramatic structural changes on X-ray, a flattened cervical curve alters muscle function in ways that produce headaches. The suboccipital muscles, a group of small muscles at the very top of the neck, become chronically shortened and tight when the head sits forward. These muscles are densely packed with nerve endings and connect to the dura (the membrane surrounding the brain and spinal cord) through connective tissue bridges. Tension in this area can refer pain across the entire head.
The deeper neck flexor muscles on the front of the spine, which help maintain the cervical curve, tend to weaken when lordosis is lost. This creates an imbalance: the muscles at the back of the neck overwork while the ones at the front underperform. This combination of tightness and weakness perpetuates both the postural problem and the headaches it produces.
Can Restoring the Curve Reduce Headaches?
Multiple controlled trials have shown that restoring cervical lordosis through extension traction methods reduces pain, disability, and headache frequency. These programs typically involve specialized traction devices that apply a sustained, gentle backward force to the mid-neck while the patient lies on their back or sits in a specific position. Across several trials, participants gained 12 to 18 degrees of lordosis over 5 to 15 weeks, with 15 to 60 treatment sessions. Pain and disability improvements held up to a year and a half later in follow-up assessments.
Traditional spinal manipulation alone has largely proven unsuccessful at increasing cervical lordosis. The key difference appears to be the sustained, directional traction component. Several of these studies used a foam traction orthotic that patients placed under their neck while lying face-up for 10 to 20 minutes daily at home, combined with in-office treatments. One published case involving a pediatric patient with chronic headaches showed resolution of symptoms after improving cervical lordosis, with results maintained at 17-month follow-up through periodic home traction and roughly monthly maintenance visits.
Strengthening the deep neck flexors through exercises like chin tucks, improving workstation ergonomics to reduce forward head posture, and addressing prolonged phone or computer use are practical first steps. The goal isn’t just symptom relief but changing the mechanical environment that produces the headaches in the first place. For people whose lordosis loss is linked to degenerative disc disease or structural changes rather than posture alone, the treatment approach may need to be more comprehensive and guided by imaging.