What it is treating

The greater and lesser occipital nerves emerge from the upper cervical spine and run up over the back and side of the scalp. When they are irritated — by muscle tension gripping down on them, by degenerative changes in the upper neck, or for no identifiable structural reason at all — the result is occipital neuralgia: sharp, shocking or burning pain starting at the base of the skull that can radiate forward. Cervicogenic headache is a related but distinct problem, where pain actually originates in the joints and discs of the upper cervical spine and is referred into the head because the nerve pathways carrying neck signals and head signals converge in the same part of the spinal cord. The two are frequently confused with each other, and both are frequently confused with migraine.

The two nerves

The diagnostic value

Headache diagnosis by history and exam alone is genuinely difficult — occipital neuralgia, cervicogenic headache and migraine can all present with pain in a similar distribution, and patients are frequently treated for one when the exam actually points to another. A block answers the question directly. If anesthetizing the occipital nerves substantially relieves the headache within minutes, the occipital pathway is implicated, whatever else may also be going on. If it does very little, the pain is being generated somewhere the block cannot reach, and continuing to treat it as an occipital problem wastes time that could go toward the correct diagnosis.

What a block that works tells you about the next step

A single block that gives real relief is useful on its own, and for many patients repeating it periodically is a reasonable, low-risk plan. For headaches that keep returning on a predictable schedule, a positive block is also the gate to two longer-acting options: radiofrequency ablation of the occipital nerve, which extends the relief from hours to months by disrupting the nerve’s ability to conduct a signal, or, for headaches that are frequent and severe enough to justify an implanted device, peripheral nerve stimulation placed along the same nerve. Neither of those is offered to someone who has not first shown a clear, reproducible response to the block — the block is the audition, not a formality before a procedure we had already decided to do.

The terrain behind a headache that will not quit

A single irritated nerve rarely explains why a headache has become a daily event. Sustained tension in the muscles at the base of the skull — the suboccipital group — is one mechanical driver, and it is aggravated by a second, biological one: systemic inflammation and poor sleep both lower the threshold at which any nerve, occipital or otherwise, fires a pain signal. Layer onto that a desk job or a phone habit that has your neck flexed forward for hours at a stretch, and the postural, social piece of the equation is doing as much work as the two biological ones. A block quiets the nerve. It does not change the posture or the sleep debt that keep re-irritating it — which is why this practice pairs occipital treatment with an honest look at sleep and movement rather than treating the nerve in isolation.

The evidence, honestly

A 2021 systematic review of greater occipital nerve block for cervicogenic headache found consistent short-term benefit across the available studies, though study quality and technique varied enough that the review stopped short of endorsing one specific protocol as superior. A separate narrative review of occipital nerve block across headache disorders more broadly reached a similar conclusion: the block works acutely and as a diagnostic tool with reasonable consistency, while evidence for how long relief lasts and how it compares directly to other headache treatments is thinner and more heterogeneous. A 2026 systematic review of occipital neuralgia treatment approaches specifically noted that most published series are small and retrospective, which is typical for a condition this uncommon and this variably defined between studies.

What that means in practice: we treat a positive block as strong, individual-level evidence — you responded, not a hypothetical patient in a paper — while being honest that the published literature cannot yet tell us precisely which patients will need only occasional blocks versus ablation versus a stimulator. That decision gets made by watching how your own headaches respond over time, not by a population average.

What happens on the day

Risks, in plain language

Soreness at the injection site and a brief patch of scalp numbness are common and expected. Lightheadedness during the injection is uncommon but can happen; you will be seated or lying down for that reason. If steroid is used, a temporary dent or lightening of the skin at the injection site is a recognized, uncommon effect of repeated steroid delivered close to the surface, which is one reason this is not a procedure repeated indefinitely without reassessing whether it is still the right tool.

Common questions

Related reading

• Occipital neuralgia
• Cervical radiculopathy
• Peripheral nerve stimulation
• Radiofrequency ablation
• Sleep, movement and behavior